Falkenrath Betrayer

Devoid, flying, haste
Sacrifice another creature: Falkenrath Betrayer gains indestructible until end of turn. If the sacrificed creature was an Eldrazi, put a +1/+1 counter on Falkenrath Betrayer.
Whenever Falkenrath Betrayer deals combat damage to a player, gain control of target creature
that player controls with power less than Falkenrath Betrayer's.