Units with DC built into their weapon and good mixed bulk. So, either a dragon or Fjorm. I think fjorm is a really good candidate.
Up
+1
Down
Brave bow unit's..... especially Bridal Cordelia (+7 to all stats from L.zura)
Up
-1
Down
That's cool but she only benefits from the attack and speed. You could achieve the same thing with a darting seal. I'd rather use the skill on someone who benefits greatly from all stats.