Prime Speaker Vannifar
Legendary Creature - Elf Ooze Wizard | Power/Toughness: 2 / 4 (CMC 4)
, Sacrifice another creature: Search your library for a creature card with converted mana cost equal to 1 plus the sacrificed creature's converted mana cost, put that card onto the battlefield, then shuffle your library. Activate this ability only any time you could cast a sorcery.
- [RNA] Ravnica Allegiance #195 (M)