Moldslime Ooze

Unite (This permanent enters the battlefield with a devotion counter on it for each color this permanent shares with each other permanent you control.)
Moldslime Ooze gets +1/+1 for each devotion counter on it.
Remove a devotion counter from Moldslime Ooze: Add {g} or {b} to your mana pool. Activate this ability only once each turn.