User blog comment:Mamizou Futatsuiwa/Help me make a Crit Team :3/@comment-50.67.25.53-20141210140828/@comment-25179062-20141210145921

I use Grahdens more than any other unit (I'm talking about dungeons, not Arena). His leader skill is terrific against dark or light opponents and his BB is useful and fills quickly. I have fused imps and a sphere frog with him.

I use Karl on my mono water team, but will replace him once I level up a fifth water unit to 6*. I haven't leveled up Seria because I already had a strong fire squad when I acquired her.

I prefer the certainty of stat boots spheres  rather than the % chance spheres. Negate ailment spheres are userful in some situations. For units with two sphere slots, I go stat boost then boost BC or boost spark.