Reanimating Tome

Whenever a creature you control dies, put a charge counter on Reanimating Tome.
Sacrifice Reanimating Tome: Return target creature card with convertes mana cost X or less from your graveyard to the battlefield, where X is the number of charge counters on Reanimating Tome. It's a zombie in addition to it's other types.
"Death taught me a lot. Now I know how to overcome eternity." - John Smirk, Necromancer