Board Thread:Questions and Answers/@comment-28815094-20160713021730/@comment-28688107-20160713024404

Skill Boost III must be on the main burster, and only Val. Scathach fits the bill. NY Arthur can support her with her Flurry Boost, but you would have to find a Null Boost elsewhere, like on a Slice or Pound unit. Put all non-water units in slots #2 and #4 so they don't get frozen immediately from her preemptive freeze attack since it only targets #1, #3, and #5, iirc. However, I have not tested whether or not Earth units are also immune to freeze, from my lack of a good earth unit to clear the rift. If you bring Athos to below approx 75% HP, she will do her Multi Attack and hit every one of your units, freezing the non-water ones, and applying a ATK and DEF buff to herself. Save your pound assist for this situation, and stagger her once your turn comes, to remove her ATK buff. Rend her the next turn too. If she hits one of your units with her freeze attack, and it IMMEDIATELY dies, don't worry, you can still use a Feather to revive it. But, if she FREEZES your unit, and kills it in the next turns while it is still FROZEN, you can't revive it.