Hystrodon [Onslaught] Zombie Elf Add an amount of {B}

Add an amount of {B} equal to the sacrificed creature's converted mana cost

"It's a poor sort of memory that only works backwards

Growth has no limits

Set: Commander 2014 Type: Artifact — Equipment Rarity: Uncommon Cost: {1} Equipped creature gets +1/-1

Set: Nemesis Type: Sorcery Rarity: Rare Cost: {3}{G} Search your library for up to three cards with the same name as target creature

Hystrodon [Onslaught] Zombie Elf Add an amount of {B}Set: Onslaught Type: Creature Beast Rarity: Rare Cost: {4}{G} Trample Whenever Hystrodon deals combat damage to a player, you may draw a card. Morph {1}{G}{G} (You may cast this card face down as a 2 2 creature for {3}. Turn it face up any time for its morph cost.)