Fran, Master of the Pool

Whenever a blue or green creature enters the battlefield under you control, you may pay {g/u}{g/u}. If you do, put a +1/+1 counter on target creature you choose.
{u}{u}{u}{u}, {t}: Look at the top four cards of your library. Put a creature card in your hand and the
rest at the bottom of your library.
{g}{g}{g}{g}, {t}: Proliferate.