Her set symbol (a chocobo, which you can see by the right of her type line) indicates she's from Final Fantasy Commander, so very likely a card we'll find in the Limit Break Commander precon, headed by Cloud, Ex-SOLDIER
For example, a Tolarian Drake will spend its first turn phased in, its second phased out, and its third phased back in
any card sent from your opponents deck, hand, or field to the graveyard is banished instead
Some transformations take place as a state-based action and can't be responded to, as we see with daybound/nightbound werewolves
After escaping from the group of Ghosts, the player meets Primo, who combines with his Duel Runner and challenges the player, while the player's companions step up to take care of the remaining Ghosts
My preferred method for using Nevinyrral to create an instant army is finding a way to give it Flash through effects like Leyline of Anticipation or Vedalken Orrery so you can cast it on someone elses turn, then bring it out in response to another players board wipe