Valk, Rowanne, Prismatic Orb, Mercy, Dragon Banner, for speed clearing Normal explores. Buff Rowanne once with Prismatic, then cast her for a clear. A good lineup for Mercy at the start often produces a first-turn clear, and having Valk means it also farms souls for working on 5* kingdoms while you’re at it.
Maw, Valk, Justice, Mercy, Lion Banner for consistent Warlord 4 clears to break up the Seal grind. Use Maw on whomever is strongest just to get things rolling, use Mercy and Valk as needed to keep Justice full, and spam Justice on skulls as often as needed to clear (and again, also works for soul farming at the same time). It won’t always give you extra turns and it’ll often give the enemy skulls, but once Maw eats someone he can easily tank a few hits. It’s sometimes a close win, but I’ve never lost.