Wave of Vengeance

Target creature you control gets +1/+0 and gains first strike until end of turn. If it's a Demon creature, it gets +3/+0 and gains first strike instead.
Overload {1}{b}{r}
It's time to let them pay, my children. Pay for imprisoning us, for humiliating us, for abbandon us,
for everything they ever did to us!