Slifer the Sky Dragon [JUMP-EN061] Ultra Rare XY146 apply that target's effect

apply that target's effect

Golem ex does 50 damage to itself

[1P] Black Magic (20x)

all of your energy is mono-blue

Set: Legendary Collection Type: Psychic Rarity: Rare Retreat cost: Colorless

Slifer the Sky Dragon [JUMP-EN061] Ultra Rare XY146 apply that target's effectSet: 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