Grimoire of the Dead [Innistrad] Human Soldier Knight ) You can discard 1

) You can discard 1 card from your hand to negate the activation of a Spell or Trap Card and destroy it

also its ATK becomes half its original ATK

it gets +4/-X until end of turn

You can only use this effect of "Fire Formation - Domei" once per turn

Grimoire of the Dead [Innistrad] Human Soldier Knight ) You can discard 1Set: Innistrad Type: Legendary Artifact Rarity: Mythic Cost: {4} {1}, {T}, Discard a card: Put a study counter on Grimoire of the Dead. {T}, Remove three study counters from Grimoire of the Dead and sacrifice it: Put all creature cards from all graveyards onto the battlefield under your control. They're black Zombies in addition to their other colors and types.