Praxis Tokens, except with sheep
Haunting Scream brings back dead Criva; she goes right back into your hand instead of dying
Since we're in black+blue, throw in Permafrost and Backlash to keep your fluffboys alive, and Dark Return to bring them back if they do bite it
Planning to put in more than one of the legendaries, once I have the shiftstone and a tighter grasp on the deck so I can decide which