Kiryu Coco, Asacoco Dealer

Flying
You may exert Coco as it attacks, if you do, put
three charge counters on it.(An exerted creature
won't untap during your next untap step.)
{r}, Remove a charge counter from Coco:
Another target creature gets +3/+0 and haste
until the end of turn.
{b}, Remove three charge counter from Coco:
Destroy target creature.