Rem Karolus, Slayer of Eldrazi

First strike, vigilance, lifelink
Protection from Eldrazi
As long as there are 5 or more Eldrazi creatures on the battlefield, Rem Karolus has indestructible.
Whenever you sacrifice a permanent, destroy target Eldrazi Horror.
Whenever an Eldrazi creature dies, put a +1/+1 counter on Rem Karolus.