Board Thread:General Chit-Chat/@comment-30324419-20161202001754/@comment-26988848-20161207003229

You can try this squad, probably not the best but still fills in the important buffs;

Ark - Covers: leader skill, boost to ATK, boost hit count (bb only), heal, light barrier, remove ailments (bb only), OD gauge fill rate. Depending on the SP setup he can also cover: elemental damage negation for 1 turn, critical damage negation for 1 turn, adds all 6 elements.

Hisui - Covers: 2 turns Mitigation (omni enchancements), boost DEF and REC, boost DEF based on REC, elemental mitigation, damage reduction while guarding, negate ailments (bb only).

Lasswell - Covers: Spark damage buff, DEF ignore buff, boost ATK and DEF of WATER type units.

Melord - Covers: BB fill when attacked (bb only), BB gauge instant fill (bb only), boost DEF based on ATK, critical hit rate boost, critical damage boost. Depending on the SP setup he can also cover: ATK, DEF reductions, remove status ailments.

Lara - Covers: Heal (bb only), HoT buff, BB ATK buff (bb only), critical damage negation for 1 turn, damage may restore hp (SBB only), BC and HC drop rate buff. Depending on SP setup she can also cover: ATK, DEF and REC reduction effect negation for 1 turn, mitigation for 1 turn.

NOTES:

Friend can be any unit you desire, however I would highly recommend Lauda if available, he can provide BB ATK buff which is higher than Lara's, bb gauge recovery on spark and probable spark critical.

If you don't want the critical buffs you can replace Melord with Felice; she can provide the bb gauge when, bb regen, bb gauge on spark and healing during spark (only if you have the SP enhancement).

Hisui must be OMNI with the 50% damage reduction SP skills unlocked. Having 2 turns mitigation is incredibly useful, 60SP total for both his mitigation buffs. They're literally a must have.

If Lara has the 50% mitigation buff SP skill use her BB/SBB before Hisui, her 1 turn mitigation can cancel Hisui's 2 turn mitigation.

If you have other Ark friend leads then you can use Faelan to get ailment inflictions and bb atk buff. Or you can raise your Lauda and use him.

I tried to make this catering to what you wanted and to allow you to use it straight away, the only unit you need to evolve would be Hisui and Ark.

Some advice for building squads in the future, build it around your mitigator (a 2 turn mitigator preferably) and then build up the buffs from there. In a large portion of hard content survival is important so fill out the minimum defensive buffs first; mitigation, def buff, ailment negation and healing.