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.)
Enchant playerWhenever enchanted player casts an instant or sorcery spell, each other player may copy that spell and may choose new targets for the copy they control.
, : Exile target creature you control., : 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.
FlyingWhenever Fiend of the Shadows deals combat damage to a player, that player exiles a card from their hand. You may play that card for as long as it remains exiled.Sacrifice a Human: Regenerate Fiend of the Shadows.
Burning Oil deals 3 damage to target attacking or blocking creature.Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)
Target permanent you control gains protection from the color of your choice until end of turn.Fateful hour — If you have 5 or less life, instead you and each permanent you control gain protection from the color of your choice until end of turn.
Equipped creature gets +1/+0 and has vigilance.Whenever equipped creature dies, if it was a Human, create a 1/1 white Spirit creature token with flying.Equip
