Mul-T

Double strike
{x}{w}{t}: Put a stun counter on X target creatures,
then tap each creature with a stun counter on it.
{3}{w}{u/r}:Mul-T gets +2/+0 and gains trample
until end of turn.
{3}{w}{u/r}{u/r}: Mul-T gets +1/+4 and gains defender
until end of turn.