Just to break down a few key roles for this faction, Healer/Sheild options:
1. Toragi (epic) - places a shield buff and ally protection for 2 turns. 3 turn cooldown when booked, and heals himself. can provoke as well to lock down the other team.
2. Hotatsu (epic) - continuous heal and inc def for 2 turns, 3 turn cooldown when booked.
3. Burangi (epic) - places shield buff on allies with less than 50% hp, but 4 turn cool down. Also does a stun on his A2.
4. Riho (lego) - MVP healer/debuffer and can block buffs. I think if you have her, you've got this faction on lock.
5. Kyoku (lego) - Ally protection, places block damage on herself, and has a passive (on long cooldown) that increases def and heals allies.
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CC options:
1. Toragi as mentioned with provoke.
2. I think Sachi (epic) in stun gear could do well because AOE A1. does atk up as well.
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Attack options - there's a lot, including ninja. I think everyone will be fine in this category.
Revive options - are none (except for Sachi but good luck getting it to trigger). Means we really gotta focus on the healers/shielders/cc to survive.
The frog will definitely be on my team. So will Genzin for Dec Def, ninja for freeze/dmg, Burangi cause he's built for DT already, and probably genbo for the early stages because he's built. Might need more stun or maybe Hotatsu for extra heals later. Someone give me Riho :)