Lithoform Engine [Zendikar Rising Prerelease Promos] Fourth Edition and offal of the Krark

and offal of the Krark Clan is diligently collected

When Voracious Hydra enters the battlefield

Set: Mirrodin Besieged Type: Sorcery Rarity: Rare Cost: {X}{G} Search your library for a green creature card with mana value X or less

Set: Revised Edition Type: Artifact Rarity: Rare Cost: {1} Mana Vault doesn't untap during your untap step

then that player chooses a card name

Lithoform Engine [Zendikar Rising Prerelease Promos] Fourth Edition and offal of the KrarkSet: Zendikar Rising Prerelease Promos Type: Legendary Artifact Rarity: Mythic Cost: {4} {2}, {T}: Copy target activated or triggered ability you control. You may choose new targets for the copy. {3}, {T}: Copy target instant or sorcery spell you control. You may choose new targets for the copy. {4}, {T}: Copy target permanent spell you control. (The copy becomes a token.)