Introducing the first Princess Festival (aka PriFes) unit and also the much awaited unit, Christina Morgan! Her reputation being a badass in the story also carried to the unit application. If Miyako's invincibility was already pain in the ass for physical attackers, well we got a version 2 of that - the Numbers Avalon.
Q: Do i need to pull for her?
A: She is a MUST unit! Get her no buts! If you don't have enough gems, resist temptation and wait for the banner rerun (the PriFes) after 3 months from now.