Rhonas, Eternal of Strength

Trample
Whenever Rhonas, Eternal of Strength attacks,
another target creature you control gets +2/+2
until end of turn.
At the beginning of your end step, if an
opponent controls three or more creatures, you
may pay {3}. if you do, return Rhonas, Eternal of Strength from your graveyard to the battlefield
tapped.