Extus, Oriq Overlord // Awaken the Blood Avatar [Strixhaven: School of Mages Prerelease Promos]

As an additional cost to cast this spell, you may sacrifice any number of creatures. This spell costs {2} less to cast for each creature sacrificed this way. Each opponent sacrifices a creature. Create a 3/6 black and red Avatar creature token with haste and "Whenever this creature attacks, it deals 3 damage to each opponent."