Slifer, le Dragon Céleste CT13-FR001

Requires 3 Sacrifices for its Normal Summon (cannot be Set Normally). The Normal Summon of this card cannot be negated. When it is Normal Summoned, cards and effects cannot be activated. Once per turn, during the End Phase, if this card was Special Summoned, send it to the Graveyard. This card gains 1000 ATK/DEF for each card in your hand. If one or more monsters are Normal or Special Summoned to your opponent's field in Attack Position, those monsters lose 2000 ATK, and if their ATK becomes 0 as a result, destroy them.