Legendary Creature - Angel Ruthless Technomancer When this creature enters, you may sacrifice another creature you control
Most LGS locations that carry Universes Beyond sets will get at least a few Scene Boxes around release
And yes, you can equip another mobilize creature with it to stack the triggers
Pack in cheap Zombies, from Cryptbreaker to Wayward Servant, pepper it with "lords" from Cemetery Reaper to Death Baron, and supplement with anthem effects from Shared Triumph to Renewed Solidarity
At six packs per player in a sealed event, that equates to 3,000 boosters opened
She has fantastic synergies with Obyra, and the create a token on your opponent's turn trigger makes Faerie cards and instants great for messing up your opponent's plans by suddenly putting a body on the field that wasn't there before