Patchouli.
All the cards are random and make you focus on two different things at the same time. All of the cards but one of them (UGH) are pure, fun dodging.
Satori would have been an option if not for her hideous, static nonspells.
Aya is easy second place.
Marisa in IN is all about learning her tricks except for Asteroid Belt, also plenty of her nonspells are static.
Murasa is fine except for her first spell which is "why the fuck is it there".
Seiga... dear God, Tongling Yoshika is a horrid card. There's nothing there to overly compensate for this besides MAYBE her third nonspell.
Prismrivers... NO.