Twilight Sparkle (My Little Pony: Friendship is Magic Heroic Female Beast 5/week
Twilight Sparkle is as seen in MLP: FiM in her Alicorn (winged unicorn) form. She has access to all her standard magic but none of the temporary power ups (such as the Princesses' powers or Chest of Harmony).
Abilities Element of Magic (Passive) - The potency of magic powers of Twilight Sparkle's team is doubled (not including her own). This doesn't affect magical artifacts that have their powers independent of the holder/user.
Cutie Mark Mishap (Start of Battle) - Once every three weeks, Twilight may cast an unfinished Cutie Mark spell on the enemy team, swapping their abilities randomly so that no enemy combatant have their own ability set for the week. Cooldown count is not affected. If the ability requires certain physical anatomy, it can be activated using the closest analogy possible (e.g. using arms as substitute for tentacles).
Upgrades
New Ability: Friendship is Magic - Once every four weeks, Twilight Sparkle may gather round her team and with the power of friendship they can blast a friendship beam to an enemy combatant. If the enemy combatant is of evil alignment, they will be turned into a stone statue. Otherwise, they will have a change of heart and fight alongside Twilight's team for the week. This ability will fail if even one of her team's combatants is .
Terrain Castle of Friendship - A large castle located in Ponyville as depicted in MLP: FiM. Access outside the castle is forbidden.