Atrocitus

Lantern creature spells and abilities you play cost {1} less for each red Lantern creature you control.
Flying
{t}: Create a 3/3 red Light Construct creature token with flying.
{r}{r},{t}: sacrifice a creature you control. Put a +1/+1 counter on Atrocitus, then Atrocitus deals damage to itself and target creature you don't control equal to the sacrificed creature's toughness.