Ganath, Blight Wave

Flying, lifelink
When a counter is placed on a permanent you control, put that many counters plus 2.
When a counter is placed on a permanent you don't control, you may put that many counters plus 2 on that permanent.
{2}{b/g} Put a +1/+1 counter on target creature you control or put a -1/-1 counter on target creature you don't control.
{p/b}{p/w}{p/u}{p/g}Until end of turn, the next time you cast a spell or activate an ability, you may change each reference to target to each.