Use her to inspire two opposing creatures, and now their controller has to make a tough choice on their turn
It can also make an emblem that deals direct damage to a target whenever you play a red spell, which is terrifying.
Blue: The Warlords of Tempo (Efficient Answers) Philosophy : Work smarter, not harder. Blue is the most intellectual color
Though this list is looking more at the flavour of the cards, it also fits really nicely with what the card does: you gain control of a creature in an opponent's hand, give it haste so it can hit its owner, and then callously sacrifice it at the end of the turn
If you want to play some kind of self-mill thing with cards like Narcomoeba and Creeping Chill in Explorer, this can also be a good addition
Enter the Flashback mechanic