Board Thread:Questions and Answers/@comment-26471652-20150614113609/@comment-112.209.82.46-20150614164917

Lead Rosetta 6* (switch to Raaga 7* later), Sub units: Ivris 6* min, Feeva 7*, Kira 7*, Shera 6* , Friend unit (Anything that boosts atk power and crit dmg)

Swap Ivris out with any offensive unit (maybe mifune?) if you have a friend unit or Kanon to remove/negate stat ailments Feeva's HC drop boost and items can take care of healing. Raid teams are mostly dps crit teams from what I know. If you're soloing though you'll need a defensive unit like Kanon in your team to survive.

PS. If you have Kira and Feeva at 7* then you're good :)) or you could let others clear RC3 for you (but that would ruin the fun :P)