Slifer the Sky Dragon [JUMP-EN061] Ultra Rare 153 you may switch 1 of

you may switch 1 of your opponent's Benched Pokemon with the Defending Pokemon

any damage done this Pokemon by attacks is reduced by 30

If both are heads

Does 30 damage plus 10 more for each Energy Card attached to the Defending Pokemon

Slifer the Sky Dragon [JUMP-EN061] Ultra Rare 153 you may switch 1 ofSet: Shonen Jump Magazine Promos Card type: Effect Monster Rarity: Ultra Rare Requires 3 Tributes to Normal Summon (cannot be Normal Set). This card's Normal Summon cannot be negated. When Normal Summoned, cards and effects cannot be activated. During the End Phase, if this card was Special Summoned: Send it to the Graveyard. This card gains 1000 ATK and DEF for each card in your hand. When a monster(s) is Normal or Special Summoned to your opponent's