Mwonvuli Bard

Creature spells you cast with power 5 or greater have convoke. (Your creatures can help cast those spells. Each creature you tap while casting an creature spell with power 5 or greater pays for {1} or one mana of that creature's color.)

"I cannot decide whether his songs are charming or infuriating. Perhaps that is the point."
- Morgrul, the Mighty