Stat modifier

When a stat is used in a calculation in battle, a number of stat modifiers may be applied during the calculation. During a battle, a Pokémon's effective stats may be raised or lowered by certain moves, Abilities, and held items. Some attacks may only have a chance of raising or lowering stats, while certain Abilities and held items may require a triggering event to activate any stat modifications. Stat modifiers always reset when the affected Pokémon exits the battlefield.

The "Check Status" view from Pokémon Scarlet and Violet, showing stage modifiers on the left.

Stages

The modifiers conferred by most moves operate on a sliding scale of stages (also known as stat ranks in Pokémon Masters EX). When a given stat is raised or lowered, its current stage is increased or decreased by the amount dictated by the move, up to a maximum of +6 or a minimum of -6. A given stage corresponds to a given multiplier that will modify the stat when it is used in battle calculations. The exact multipliers for stages are detailed in a later section below. Note that prior to Generation III, no stat can fall below 1 or rise above 999; any further modifiers will be treated as if the stat was capped regardless of whether the stat is at -6 or +6 or not.

HP is the only stat that has no stages. Dynamax is the only mechanic that can directly change a Pokémon's maximum HP without changing the variables in the HP-determining formula.

In the Generation I and II core series games, when an in-game opponent outside of the Battle Tower uses a status move that would decrease one of the target's stats, that move has a 25% chance to fail in addition to its normal chance to miss.

The stages of all of a Pokémon's stats are reset to zero when the Pokémon is withdrawn or affected by the moves Haze or Clear Smog. When a move lands a critical hit in Generations I and II, it ignores all changes to stat stages. From Generation III onward, critical hits ignore the attacker's negative stat stages and the defender's positive stat stages. If a Pokémon is under the effect of Mist, Clear Body, White Smoke, or Full Metal Body, its stat stages can only be lowered through self-inflicted methods such as Superpower. Chip Away, Sacred Sword, and Darkest Lariat ignore changes to the target's physical Defense and Evasion stat stages. Foresight, Odor Sleuth, and Miracle Eye can cause subsequent moves to ignore the target's Evasion stat stages. From Generation V onward, if a Pokémon's Ability is Simple, then any changes to stages are doubled. If a Pokémon's Ability is Contrary, then any changes to stages are reversed. Topsy-Turvy reverses the stages of all of the target's stats.

While some moves, Abilities, and held items may also modify the stages of a Pokémon's stats, others may apply unique multipliers that are separate from—and thus can stack with—stages. Examples include the move Tailwind, which multiplies Speed by 2 times, the Ability Slow Start, which temporarily halves Attack and Speed, and the held item Choice Band, which multiplies Attack by 1.5 times.

From Generation V onward, the Speed stat has boundaries put in place that don't apply to any other stat. After taking stat stages and all other modifiers into account, if the resulting Speed stat is above 10000, it is reduced to 10000. The Speed stat is then subtracted from 10000 if and only if Trick Room is in effect, and finally if the Speed stat is greater than or equal to 8192, it is reduced by 8192 to produce the final figure used in speed comparisons. As a result, a Pokémon that runs into the limit of 10000 Speed is further reduced to an effective 1808.

In-battle modification

In the table below, anything in italics is capable of modifying one stat out of two or more and may not always affect the same one.

Stat	Raisers				Reducers
	Moves	Z-Moves	Abilities	Items	Moves	Abilities
Attack	1 stage Ancient Power Bulk Up Clangorous Soul Coaching Coil Curse Dragon Dance Gear Up Growth* Hone Claws Howl Meditate Metal Claw Meteor Mash No Retreat Ominous Wind Order Up Power-Up Punch Rage* 1 stage Rototiller Sharpen Shift Gear Silver Wind Tidy Up Victory Dance Work Up 2 stages Acupressure Decorate Fillet Away Shell Smash Spicy Extract Swagger Swords Dance ≥3 stages Belly Drum* Fell Stinger* Other Power Split* Power Trick*	1 stage Z-Bulk Up* Z-Hone Claws* Z-Howl* Z-Laser Focus Z-Leer Z-Meditate* Z-Odor Sleuth Z-Power Trick Z-Rototiller Z-Screech Z-Sharpen* Z-Tail Whip Z-Taunt Z-Topsy-Turvy Z-Will-O-Wisp 1 stage Z-Work Up* Z-Celebrate Z-Conversion Z-Forest's Curse Z-Geomancy Z-Happy Hour Z-Hold Hands Z-Purify Z-Sketch Z-Trick-or-Treat Clangorous Soulblaze 2 stages Z-Mirror Move Extreme Evoboost 3 stages Z-Splash	1 stage Anger Shell Beast Boost Chilling Neigh Download Guard Dog Intrepid Sword Justified Moxie Sap Sipper Thermal Exchange 2 stages Commander Defiant Moody ≥3 stages Anger Point* Other Flower Gift Gorilla Tactics Guts Huge Power Hustle Orichalcum Pulse Protosynthesis Pure Power Quark Drive	1 stage Cell Battery Liechi Berry Snowball 2 stages Starf Berry Weakness Policy X Attack* Other Choice Band Light Ball* Thick Club	1 stage Aurora Beam Baby-Doll Eyes Breaking Swipe Chilling Water Growl King's Shield* Lunge Noble Roar Parting Shot Play Nice Play Rough Secret Power Springtide Storm Strength Sap Superpower Tearful Look Tickle Trop Kick Venom Drench 2 stages Charm Feather Dance Memento Other Power Split* Power Trick*	1 stage Intimidate Moody Other Defeatist Slow Start Tablets of Ruin
Defense	1 stage Ancient Power Bulk Up Clangorous Soul Coil Coaching Cosmic Power Curse Defend Order Defense Curl Flower Shield Harden Magnetic Flux No Retreat Ominous Wind Order Up Psyshield Bash Silver Wind 1 stage Skull Bash* Steel Wing Stockpile* Victory Dance Withdraw 2 stages Acid Armor Acupressure Barrier Diamond Storm* Iron Defense Shelter Stuff Cheeks ≥3 stages Cotton Guard Other Guard Split* Power Trick*	1 stage Z-Aqua Ring Z-Baby-Doll Eyes Z-Baneful Bunker Z-Block Z-Charm Z-Defend Order* Z-Fairy Lock Z-Feather Dance Z-Flower Shield Z-Grassy Terrain Z-Growl Z-Harden* Z-Mat Block* Z-Noble Roar Z-Pain Split Z-Play Nice Z-Poison Gas Z-Poison Powder Z-Quick Guard Z-Roar Z-Spider Web 1 stage Z-Spikes Z-Spiky Shield Z-Stealth Rock Z-Strength Sap Z-Tearful Look Z-Tickle Z-Torment Z-Toxic Z-Toxic Spikes Z-Venom Drench Z-Wide Guard Z-Withdraw* Z-Celebrate Z-Conversion Z-Forest's Curse Z-Geomancy Z-Happy Hour Z-Hold Hands Z-Purify Z-Sketch Z-Trick-or-Treat Clangorous Soulblaze 2 stages Extreme Evoboost	1 stage Beast Boost Dauntless Shield Stamina 2 stages Commander Moody Water Compaction Well-Baked Body Other Fur Coat Grass Pelt Marvel Scale Protosynthesis Quark Drive	1 stage Electric Seed Ganlon Berry Grassy Seed Kee Berry 2 stages Starf Berry X Defense* Other Eviolite Metal Powder	1 stage Acid* Armor Cannon Clanging Scales Close Combat Crunch* Crush Claw Dragon Ascent Fire Lash Grav Apple Headlong Rush Iron Tail Leer Liquidation Octolock Razor Shell Rock Smash Scale Shot 1 stage Secret Power* Shadow Bone Shell Smash Spit Up* Superpower Swallow* Tail Whip Thunderous Kick Tickle Triple Arrows V-create 2 stages Obstruct Screech Spicy Extract Other Guard Split* Power Trick*	1 stage Anger Shell Gulp Missile Moody Weak Armor Other Sword of Ruin
Special Attack	1 stage Ancient Power Calm Mind Charge Beam Clangorous Soul Fiery Dance Flatter Gear Up Growth* Meteor Beam No Retreat Ominous Wind Rototiller Silver Wind Torch Song Quiver Dance Work Up 2 stages Acupressure Decorate Fillet Away Geomancy Nasty Plot Shell Smash ≥3 stages Tail Glow* Other Power Split*	1 stage Z-Confuse Ray Z-Electrify Z-Embargo Z-Gear Up* Z-Gravity Z-Growth* Z-Instruct Z-Ion Deluge Z-Metal Sound Z-Mind Reader Z-Miracle Eye Z-Nightmare Z-Psychic Terrain Z-Reflect Type Z-Simple Beam 1 stage Z-Soak Z-Sweet Kiss Z-Teeter Dance Z-Telekinesis Z-Celebrate Z-Conversion Z-Forest's Curse Z-Geomancy* Z-Happy Hour Z-Hold Hands Z-Purify Z-Sketch Z-Trick-or-Treat Clangorous Soulblaze 2 stages Z-Heal Block Z-Psycho Shift Extreme Evoboost	1 stage Anger Shell Beast Boost Berserk Download Grim Neigh Lightning Rod* Storm Drain* Soul-Heart 2 stages Commander Competitive Moody Other Battery Hadron Engine Minus Plus Protosynthesis Quark Drive Solar Power	1 stage Absorb Bulb Petaya Berry 2 stages Starf Berry Weakness Policy X Sp. Atk* Other Choice Specs Deep Sea Tooth Light Ball Soul Dew*	1 stage Bitter Malice Confide Mist Ball Moonblast Mystical Fire Noble Roar Parting Shot Secret Power* Skitter Smack Snarl Spirit Break Struggle Bug Tearful Look Venom Drench 2 stages Captivate Draco Meteor Eerie Impulse Fleur Cannon Leaf Storm Memento Overheat Psycho Boost Other Power Split*	1 stage Moody Other Defeatist Vessel of Ruin
Special Defense	1 stage Ancient Power Aromatic Mist Calm Mind Charge* Clangorous Soul Cosmic Power Defend Order Magnetic Flux No Retreat Ominous Wind Quiver Dance 1 stage Silver Wind Stockpile* 2 stages Acupressure Amnesia Geomancy Other Guard Split*	1 stage Z-Charge Z-Confide Z-Cosmic Power* Z-Crafty Shield Z-Eerie Impulse Z-Entrainment Z-Flatter Z-Glare Z-Ingrain Z-Light Screen Z-Magic Room Z-Magnetic Flux* Z-Mean Look Z-Misty Terrain Z-Mud Sport Z-Spotlight Z-Stun Spore Z-Thunder Wave Z-Water Sport 1 stage Z-Whirlwind Z-Wish Z-Wonder Room Z-Celebrate Z-Conversion Z-Forest's Curse Z-Geomancy* Z-Happy Hour Z-Hold Hands Z-Purify Z-Sketch Z-Trick-or-Treat Clangorous Soulblaze 2 stages Z-Aromatic Mist Z-Captivate Z-Imprison Z-Magic Coat Z-Powder Extreme Evoboost	1 stage Beast Boost 2 stages Commander Moody Protosynthesis Quark Drive Other Flower Gift	1 stage Apicot Berry Luminous Moss Maranga Berry Misty Seed Psychic Seed 2 stages Starf Berry X Sp. Def* Other Assault Vest Deep Sea Scale Eviolite Metal Powder* Soul Dew*	1 stage Acid* Apple Acid Armor Cannon Bug Buzz Close Combat Crunch* Dragon Ascent Earth Power Energy Ball Flash Cannon Focus Blast Headlong Rush Luster Purge Octolock Psychic 1 stage Shadow Ball Shell Smash Spit Up* Swallow* V-create 2 stages Acid Spray Fake Tears Lumina Crash Metal Sound Seed Flare Other Guard Split*	1 stage Anger Shell Moody Other Beads of Ruin
Speed	1 stage Aqua Step Aura Wheel Ancient Power Clangorous Soul Dragon Dance Esper Wing Flame Charge No Retreat Ominous Wind Order Up Quiver Dance Rapid Spin* Scale Shot Silver Wind Tidy Up Trailblaze Victory Dance 2 stages Acupressure Agility Autotomize Fillet Away Geomancy Rock Polish Shell Smash Shift Gear Other Tailwind Speed Swap*	1 stage Z-After You Z-Aurora Veil Z-Electric Terrain Z-Encore Z-Gastro Acid Z-Grass Whistle Z-Guard Split Z-Guard Swap Z-Hail Z-Hypnosis Z-Lock-On Z-Lovely Kiss Z-Power Split Z-Power Swap Z-Quash Z-Rain Dance Z-Role Play Z-Safeguard Z-Sandstorm Z-Scary Face Z-Sing Z-Skill Swap Z-Sleep Powder Z-Sticky Web 1 stage Z-String Shot Z-Sunny Day Z-Supersonic Z-Toxic Thread Z-Worry Seed Z-Yawn Z-Celebrate Z-Conversion Z-Forest's Curse Z-Geomancy* Z-Happy Hour Z-Hold Hands Z-Purify Z-Sketch Z-Trick-or-Treat Clangorous Soulblaze 2 stages Z-Ally Switch Z-Bestow Z-Me First Z-Recycle Z-Snatch Z-Switcheroo Z-Trick Extreme Evoboost	1 stage Anger Shell Beast Boost Motor Drive Rattled Speed Boost Steadfast Weak Armor Wind Rider 2 stages Commander Moody ≥3 stages Steam Engine Other Chlorophyll Quick Feet Sand Rush Slush Rush Surge Surfer Swift Swim Protosynthesis Quark Drive Unburden	1 stage Adrenaline Orb Salac Berry 2 stages Starf Berry X Speed* Other Choice Scarf Quick Powder	1 stage Bleakwind Storm Bubble Bubble Beam Bulldoze Constrict Curse Drum Beating Electroweb Glaciate Hammer Arm Ice Hammer Icy Wind Low Sweep 1 stage Mud Shot Pounce Rock Tomb Secret Power* Silk Trap Sticky Web* Tar Shot Toxic Thread V-create Venom Drench 2 stages Cotton Spore Scary Face Spin Out String Shot* Other Speed Swap*	1 stage Cotton Down Gooey Moody Tangling Hair Other Slow Start
Evasion	1 stage Double Team 2 stages Minimize* Acupressure Other Foresight* Odor Sleuth*	1 stage Z-Camouflage Z-Detect Z-Flash Z-Kinesis Z-Lucky Chant Z-Magnet Rise Z-Sand Attack Z-Smokescreen	2 stages Moody* Other Sand Veil Snow Cloak Tangled Feet	Other Bright Powder Lax Incense	1 stage Defog 2 stages Gravity Sweet Scent* Other Foresight* Miracle Eye Odor Sleuth*	1 stage Moody*
Accuracy	1 stage Hone Claws Coil 2 stages Acupressure	1 stage Z-Copycat Z-Defense Curl Z-Defog Z-Focus Energy Z-Mimic Z-Sweet Scent Z-Trick Room	2 stages Moody* Other Compound Eyes Victory Star	2 stages X Accuracy* Other Wide Lens Zoom Lens	1 stage Flash Kinesis Leaf Tornado Mirror Shot Mud Bomb Mud-Slap Muddy Water Night Daze Octazooka Sand Attack Secret Power Smokescreen	1 stage Moody* Other Hustle Wonder Skin

Stage modification quotes

The "Pokémon" identifier in the quotes below includes a prefix that varies depending on the situation; most wild Pokémon (but not all) and opposing Pokémon have one. If a move would raise a stat that is too high or lower a stat that is too low as a secondary effect, a quote will not be shown. From Generation V onwards, the game will take into account the effective change (for example, not +2 for a stat at +5); additionally moves that list multiple quotes will always state each stat separately, even if they're all capped.

In Generation II, if Curse still has a stat to raise, it will not display any text for the capped stats. In Generation III, Curse will instead fail if all stats are capped. In Generation III and IV, it will always list each stat separately when it does so.

Change	Generation I	Generation II	Generation III	Generation IV	Generation V	Generation VI	Generation VII	Generation VIII	Generation IX
too high	Nothing happened!	<Pokémon>'s <stat> won't rise anymore!	<Pokémon>'s <stat> won't go higher!		<Pokémon>'s <stat> won't go any higher!
multiple too high		<Pokémon>'s Ability won't rise anymore!	<Pokémon>'s stats won't go any higher!
+1	<Pokémon>'s <stat> rose!	<Pokémon>'s <stat> went up!	<Pokémon>'s <stat> rose!
+2	<Pokémon>'s <stat> greatly rose!	<Pokémon>'s <stat> went way up!	<Pokémon>'s <stat> sharply rose!		<Pokémon>'s <stat> rose sharply!
+3 or higher					<Pokémon>'s <stat> rose drastically!
multiple too low			<Pokémon>'s stats won't go any lower!
too low	Nothing happened!	<Pokémon>'s <stat> won't drop anymore!	<Pokémon>'s <stat> won't go lower!		<Pokémon>'s <stat> won't go any lower!
-1	<Pokémon>'s <stat> fell!
-2	<Pokémon>'s <stat> greatly fell!	<Pokémon>'s <stat> sharply fell!	<Pokémon>'s <stat> harshly fell!
-3 or lower					<Pokémon>'s <stat> severely fell!

Stage multipliers

When a move is used that increases or decreases a stat of a Pokémon in battle, it will be multiplied according to the following fractions, depending on the generation:

For Attack, Defense, Special, Sp. Attack, Sp. Defense, and Speed

Stage multipliers

Stage	-6	-5	-4	-3	-2	-1	0	+1	+2	+3	+4	+5	+6
Gen I-II	25/100	28/100	33/100	40/100	50/100	66/100	100/100	150/100	200/100	250/100	300/100	350/100	400/100
Gen III+	2/8	2/7	2/6	2/5	2/4	2/3	2/2	3/2	4/2	5/2	6/2	7/2	8/2

For accuracy and evasion

Stage multipliers

Stage (accuracy)	-6	-5	-4	-3	-2	-1	0	+1	+2	+3	+4	+5	+6
Stage (evasion)	+6	+5	+4	+3	+2	+1	0	-1	-2	-3	-4	-5	-6
Gen I handheld games	25/100	28/100	33/100	40/100	50/100	66/100	100/100	150/100	200/100	250/100	300/100	350/100	400/100
Pokémon Stadium	1/3	36/100	43/100	50/100	66/100	75/100	100/100	133/100	166/100	200/100	233/100	266/100	300/100
Gen II	33/100	36/100	43/100	50/100	60/100	75/100	100/100	133/100	166/100	200/100	233/100	266/100	300/100
Gen III-IV	33/100	36/100	43/100	50/100	60/100	75/100	100/100	133/100	166/100	200/100	250/100	266/100	300/100
Gen V+	3/9	3/8	3/7	3/6	3/5	3/4	3/3	4/3	5/3	6/3	7/3	8/3	9/3

In Generations I and II, accuracy and evasion stages are resolved separately and both multipliers are applied to the move's accuracy to determine the final chance of a move hitting or missing. For example, a Pokémon with -1 accuracy using a move that has 100% accuracy on a target with +1 evasion would have a ${\textstyle {66 \over 100}\times {66 \over 100}=43.56\%}$ chance of hitting in Generation I, or a ${\textstyle {75 \over 100}\times {75 \over 100}=56.25\%}$ chance of hitting in Generation II. In Generation III, this was changed so that the stages of the accuracy and evasion stats are now combined before determining the multiplier, with the evasion stage subtracted from the accuracy stage. Therefore, in the above situation, the attacking Pokémon would have a ${\textstyle {60 \over 100}=60\%}$ chance of hitting.

Additionally, the combined stages are capped at -6 and +6 from Generation III onward (extra stages are surplus), meaning that a Pokémon with minimum accuracy attacking a target with maximum evasion will have no lower than a ${\textstyle {33 \over 100}=33\%}$ chance to hit. (For comparison, in Generation II, the attacker would only have a ${\textstyle {33 \over 100}\times {33 \over 100}=10.89\%}$ chance of hitting.)

In Generation IV, if a Pokémon's Ability is Simple, then its stats will be multiplied as if the stat change was doubled. For example, a stat raised by one stage will be multiplied as if it were raised by two stages.

List of Abilities, moves, and items affected by stat changes

Abilities

This section is incomplete. Please feel free to edit this section to add missing information and complete it.

Name Effect Generation Defiant Boosts the Pokémon's Attack stat sharply when its stats are lowered. V Competitive Boosts the Sp. Atk stat sharply when a stat is lowered. VI

Moves

Name Effect Generation Punishment The more the target has powered up with stat changes, the greater the move's power. IV Stored Power The user attacks the target with stored power. The more the user's stats are boosted, the greater the move's power. V Power Trip The user boasts its strength and attacks the target. The more the user's stats are boosted, the greater the move's power. VII Lash Out The user lashes out to vent its frustration toward the target. This move's power is doubled if the user's stats were lowered during this turn. VIII

Items

Name Effect Generation Ginema Berry Raises a lowered stat in battle. III White Herb Restores any lowered stat in battle. III Adrenaline Orb If held by a Pokémon, it boosts Speed when intimidated. VII Eject Pack When the holder's stats are lowered, it will be switched out of battle. VIII

In Pokémon Legends: Arceus

In Pokémon Legends: Arceus, stat modifiers work much differently that they do in other core series games:

• Stat modifiers expire after the affected Pokémon has executed a certain number of turns or switches out
• Stat modifiers for Attack also affect Sp. Atk equally, and vice versa
• Stat modifiers for Defense also affect Sp. Def equally, and vice versa
• Stat modifiers each only have one stage multiplier: a ×1.5 boost or a ײ/₃ drop.
  • If a stat modifier is applied to a Pokémon that already has that same modifier, then it will simply overwrite its number of turns remaining
  • If a stat modifier is applied to a Pokémon with the opposite modifier, then it will cancel it out

Modifier	In-game description	Details	Causes
Power Boost	The Pokémon's offensive stats are raised, boosting its Attack and Sp. Atk stats.	Power Boost indicates that a Pokémon's offensive stats are raised, increasing the damage it deals with its moves by 50%. If the Pokémon is already affected by Power Drop, it will cancel it out instead. It is usually caused by moves that can raise Attack or Sp. Atk in other core series games.	4 turns Bulk Up • Calm Mind • Victory Dance 5 turns Nasty Plot • Swords Dance
Power Drop	The Pokémon's offensive stats are lowered, reducing its Attack and Sp. Atk stats.	Power Drop indicates that a Pokémon's offensive stats are lowered, decreasing the damage it deals by a third. If the Pokémon is already affected by Power Boost, it will cancel it out instead. It is usually caused by moves that can lower Attack or Sp. Atk in other core series games.	3 turns Draco Meteor* • Leaf Storm* Mystical Fire • Snarl • Struggle Bug 5 turns Baby-Doll Eyes
Guard Boost	The Pokémon's defensive stats are raised, boosting its Defense and Sp. Def stats.	Guard Boost indicates that a Pokémon's defensive stats are raised, decreasing the damage it takes from attacks by a third. If the Pokémon is already affected by Guard Drop, it will cancel it out instead. It is usually caused by moves that can raise Defense or Sp. Def in other core series games.	4 turns Victory Dance 5 turns Iron Defense
Guard Drop	The Pokémon's defensive stats are lowered, reducing its Defense and Sp. Def stats.	Guard Drop indicates that a Pokémon's defensive stats are lowered, increasing the damage it takes from attacks by 50%. If the Pokémon is already affected by Guard Boost, it will cancel it out instead. It is usually caused by moves that can lower Defense or Sp. Def in other core series games.	3 turns Close Combat* • Headlong Rush* Triple Arrows

References

This game mechanic article is part of Project Games, a Bulbapedia project that aims to write comprehensive articles on the Pokémon games.