Massbringer

Vigilance, lifelink
Whenever Massbringer deals damage, put a
+1/+1 counter on it.
Forecast -- {g}{w}, Reveal Massbringer from your
hand: Target creature gains vigilance and lifelink
until end of turn. Whenever that creature deals
damage this turn, put a +1/+1 counter on it. (Activate this ability only during your upkeep and
only once each turn.)