Greg, the Razorboar

Multikicker {r/g}
When Greg, the Razorboar enters the battlefield
put a +1/+1 counter on target creature for each
time Greg, the Razorboar was kicked.
Riot
When ever a +1/+1 counter is put on another creature you control put a +1/+1 counter on
Greg, the Razorboar