{1}, {T}: Exile target creature you control. {7}, {T}: Exile target creature you don't control. When Helvault is put into a graveyard from the battlefield, return all cards exiled with it to the battlefield under their owners' control.

Whenever this creature or another Zombie you control dies, look at the top card of your library. If it's a Zombie card, you may reveal it and put it into your hand. If you don't put the card into your hand, you may put it into your graveyard.

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Flying At the beginning of your upkeep, sacrifice a creature other than this creature.

{T}, Mill a card: Add {C}. (To mill a card, put the top card of your library into your graveyard.)

Flash Emerge {5}{U}{U} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.) When you cast this spell, tap up to four target permanents.

Sacrifice a creature: This creature gains flying until end of turn. If the sacrificed creature was a Human, put a +1/+1 counter on this creature.

This creature can't block. You may cast this card from your graveyard as long as you control a Zombie.

As an additional cost to cast this spell, exile a creature card from your graveyard.

Flash Flying Whenever this creature or another Spirit you control enters, tap target creature an opponent controls.

{2}{B}: Return this card from your graveyard to your hand.

This creature enters tapped. When this creature enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Flying When this creature enters, look at the top two cards of your library. Put one of them into your hand and the other into your graveyard.

Create a token that's a copy of target creature you control. Flashback {5}{U}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

({T}: Add {U}.)

Destroy target tapped creature. Madness {1}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)