I would create a DEATH Summoner, which of course, given my namesake, would be an Anubis Themed Jackal.
2 Ability, 5 Mana Cost Death Summoner
New ability: Defy Death: The first Monster to be defeated in a battle remains for the remainder of that battle round, and takes any damage that would be directed at it. It then dies when the round ends (So think: Opportunity rounds, the first guy killed would absorb that entire rounds' attacks)
Grants all Monsters "Vulture"