Elora, Fleshpriestess

Whenever Elora, Fleshpriestess enters the battlefield, each opponent loses 2 life.

Creatures with a Marker counter on them are Horrors in addition to their other types.
Horror creatures you control get +1/+1 and have Menace.

{t}, Sacrifice another creature: Target creature you control gains indestructible until end of
turn. If the sacrificed creature had a marker counter on it, draw a card.