Lazav, the Multifarious [The List] XY35 target player may put Gorm

target player may put Gorm into their hand from their library

You can only use this effect of "Revendread Slayer" once per turn

then target 1 WATER monster in your GY

inflict 300 damage to your opponent for each monster they control

also if you have any number of "Blue-Eyes" monster(s) in your GY

Lazav, the Multifarious [The List] XY35 target player may put GormSet: The List Type: Legendary Creature Shapeshifter Rarity: Mythic Cost: {U}{B} When Lazav, the Multifarious enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) {X}: Lazav, the Multifarious becomes a copy of target creature card in your graveyard with mana value X, except its name is Lazav, the Multifarious, it's legendary in addition to its other types, and it has this ability.