Lavos, Dark Alchemist

Flying

Whenever you cast a spell, put a +1/+1 counter on Lavos, Dark Alchemist for each of that spell's colors.

Remove five +1/+1 counters from Lavos, Dark Alchemist: Add {w}{w}{u}{u}{b}{b}{r}{r}{g}{g} to your mana pool. Activate this ability only once each turn