I have a 5* Lilina with speed - and defense+. She is slow as hell with 22 spd. I gave her axe breaker, at least that way she can double any axe. Should I seek more strength or cover her weakness. With Lilina, Nino, and Catria the arena has been pretty smooth.
By the way, are the stat plus (def, spd, att, etc) A slot skill worth using?