Jigglypuff, Rosy Roller

{w}{t}: Put a spin counter on Jigglypuff, Rosy
Roller.
Whenever Jigglypuff, Rosy Roller attacks, you
may remove X spin counters from it.
If you do, it gains +X/+0 and trample until end
of turn.
At the beginning of your end step, if you removed
6 or more spin counters from Jigglypuff, sacrifice
it.