Grove of Flittering Flocks

At the beginning of each of your main phases,
choose one:
•All Birds gain vigilance until end of turn.
•Exile target creature an opponent controls with
a converted mana cost equal to target Bird you
control.
•Create a token of target non-legendary Bird any
player controls.
{bull}Add X {g} or {w} in any combination equal to the highest converted mana cost of Birds you control.