Katarus, Great Tyrant

First strike, Trample, Flying
{r}: Katarus gets +1/+0 until end of turn.
{3}{b}{r}{g}: Create a 4/4 red Dragon creature token with Flying and Tyrant 4 (When this creature attacks, you may sacrifice any number of creatures, then this creature gets a number of +1/+0 or +0/+1 counters equal to the number of creatures you sacrificed.)