Diabellstar, Haunted Witch

Menace, haste

Whenever Diabellstar, Haunted Mage attacks, Wizards, Warlocks, and Shamans you control each get +2/+0 and gain undying until
end of turn." (When a creature with undying dies, if it had no +1/+1 counters on it, return it
to the battlefield under its owner's control with a +1/+1 counter on it.)