Zulnala, Crimson Commander

Horrors you control gain "Level up {b/r}{b/r}". Each
level grants +2/+2 and level three grants First
Strike. Horrors can only level up three times.
{b/r}{b/r} : Create a 1/1 red and black Horror
creature token.
{5}{b/r}{b/r} : Sacrifice all Horrors you control to deal damage equal to the total levels they had to all
players. Gain that much life.