On the upkeep, Mirror Universe's controller may tap and sacrifice it to swap life totals with their opponent
Keeping an eye on how many of your own creatures you'll need to sacrifice means that you can include creatures with built-in recursion , like Reassembling Skeleton, which can keep on coming back every time you kill it
Whenever a creature with power 2 or less enters under your control, you gain an experience counter
You can recover one of your dragons that got removed, or you can consistently degrade all of your opponents turn after turn
She also allows Alien characters to challenge ready characters, so coupled with Aliens already in play, you'll give them Challenger +2, and they can challenge ready characters at the same time, and she's not expensive to play either, at just two ink