False King Relgrixath

Flying
As an additional cost to cast this spell, you may sacrifice any number of creatures, with converted
mana cost 6 or less. This spell will cost {2} less
to cast for each creature sacrificed this way.
Whenever False King Relgrixath enters the battlefield, gain control of all creatures with
converted mana cost 6 or less until False King
Relgrixath leaves the battlefield.