Falkenrath Atrocity

Devoid (This card has no color.)
Flying, haste, trample
Sacrifice a creature: Falkenrath Atrocity gains indestructible until end of turn. If the sacrificed creature was a one or more colors, put a +1/+1 counter on Falkenrath Atrocity.
"Blood is never enough. Your eternal essence shall
have to suffice."