Magma Storm deals damage and binds the target for two to five turns. A bound target cannot switch out or flee, and takes damage equal to 1/16 of its maximum HP at the end of each turn. If a bound Pokémon uses Rapid Spin, it will be freed. If a Pokémon has Run Away or is holding a Smoke Ball, it can flee even when bound (but still cannot switch out); if a Pokémon has a Shed Shell, it can switch out even when bound (but cannot flee). A Pokémon can only be bound by one move at a time, and the effect disappears if the user is no longer on the field.
If the user of Magma Storm is holding a Grip Claw, the duration will always be 5 turns.
Magma Storm has an accuracy of 70% and a base power of 120.
Magma Storm's accuracy was increased to 75%.
Magma Storm now traps the target for four to five turns. If the user of Magma Storm is holding a Grip Claw, the duration will be 7 turns.
If the user is holding a Binding Band, the target takes damage equal to 1/8 of its maximum HP instead of 1/16.
Magma Storm's base power is now 100.
A Pokémon bound by Magma Storm now takes damage equal to 1/8 of its maximum HP at the end of each turn. If the user is holding a Binding Band, the target takes damage equal to 1/6 of its maximum HP instead.
Heatran opens its mouth and releases an extremely powerful stream of fire from its mouth at the opponent. If the opponent gets hit by the flames, the flames will surround the opponent, trapping it inside.