Board Thread:Questions and Answers/@comment-26572894-20150722222527/@comment-26297531-20150723064623

your reasoning can be easily summarised as, arena leads should have +atk and adds bb gauge momentum (either by increased bb fill rate or reduced bb cost), and quaid does all these.

for leader in normal quests, really, u cld have just about any1 as long as u have high enough dmg. well, griel is a gd lead, so is quaid.