Wide Guard protects all Pokémon on the user's side of the field for the rest of that turn from damaging moves that can target multiple Pokémon, even those used by an ally that strike all Pokémon on the field (such as Earthquake and Surf). Wide Guard will block these moves even in Single Battles. Wide Guard cannot block status moves that target multiple Pokémon, such as Dark Void and Teeter Dance.
Hyperspace Fury, Hyperspace Hole, and Phantom Force will lift the effect of Wide Guard from the target's team when used successfully. Feint and Shadow Force now lift the effect of Wide Guard from all allies, if they hit an ally.
Wide Guard will now also protect against status moves that can target multiple Pokémon, such as Dark Void or Teeter Dance.
If a damaging Z-Move that targets multiple Pokémon targets a Pokémon protected by Wide Guard, the Z-Move will bypass Wide Guard but only do 25% of the original damage (Wide Guard remains in effect). Due to an oversight, in version 1.0 of Pokémon Ultra Sun and Ultra Moon, Wide Guard reduces the damage of all damaging Z-Moves, rather than just damaging Z-Moves that target multiple Pokémon; this was fixed in version 1.1 of Pokémon Ultra Sun and Ultra Moon. (There are no damaging Z-Moves that target multiple Pokémon in Pokémon Sun and Moon.)
If powered up by a Rockium Z into Z-Wide Guard, the user's Defense stat rises by one stage.