Voluga, the Vortexsire

Flying, Vigilance, Ward {5}, Protection from blue
and green.

Voluga enters the battlefield with a +1/+1 counter
on it. At the beginning of your upkeep, proliferate.

Whenever one or more creatures you control gain
a counter, add that much mana in any combination
of {u} and/or {g}. Until end of turn, you don’t lose
this mana as steps and phases end.