Manawielder Dragon

Flying
Whenever you cast a spell, add one mana of
any color to your mana pool for each of that
spells colors.
Whenever you cast a spell, put a +1/+1
counter on Manawielder Dragon.
Remove a five +1/+1 counters from Manawielder
Dragon: Add {w}{u}{b}{r}{g} to your mana pool.