Magma Storm

Prevents the target from fleeing and deals damage for 2-5 turns.

Magma Storm deals damage on the first turn then traps the target (preventing them from switching out or fleeing), causing them to lose ⅛ of their maximum HP after each turn, for 4-5 turns.
If the user holds a Grip Claw , the after-effects last for 7 turns.
If a Binding Band is held, the damage is ⅙ of the target's maximum HP .
A Pokémon with the ability Run Away or holding a Smoke Ball are still able to flee (but not switch out).
A Pokémon holding a Shed Shell can still switch out (but not flee).
Ghost -type Pokémon can not be trapped by Magma Storm.

• In Gen 4 Magma Storm has 70% accuracy and the effect lasts for 2-5 turns and Grip Claw extends this effect to 5 turns.
• In Gen 4-5 Magma Storm has 120 power and the target loses only ¹⁄₁₆ of their maximum HP after each turn, or ⅛ while holding a Binding Band .
• In early versions of SwordShield Magma Storm can not be selected in battle (fixed in version 1.3.0).
• In Legends: Arceus Magma Storm has 90 power and burns the target.