Vile Entomber 
Creature — Zombie Warlock
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) When this creature enters, search your library for a card, put that card into your graveyard, then shuffle.
Legality
standardLEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL