Ourbos, Slayer of Men

Flying, Trample, Double strike, Hexproof
{x}{b/r} Ourbos, Slayer of Men deals double X
damage to up to X targets
{r}{r}{b}{b}{t}Exile any number of creatures from
your graveyard and then put X +1/+1 counters on
Ourbos, Slayer of Men, where X is equal the
number of creatures you exiled