Uncle Sam

More Than Meets the Eye {2}{u}{r}{w} (You may
cast this card converted for {2}{u}{r}{w}.)
At the beginning of each end step, bolster 1.
(Choose a creature with the least toughness among
creatures you control and put a +1/+1 counter on it.)
When Uncle Sam dies, return it to the
battlefield converted under its owner's 6/8
control.
-Optimus Prime, Hero