As luck would have it, I only have 2 mana troops - Dark and Fire. As the same luck would have it, I have two superb 4* average mana healers with costumes in those same elements - Big Red (BT) and Dr. Dapper (Rigard C).
With costume bonuses and lvl 5 mana troops, Both of them will be charging with 9 tiles. On top of that, I’m planning to ascend Brynhild soon. The idea is to sandwich Hildi between Rigard and BT, and if she’s able to hold off the initial onslaught, once she goes off, she heals herself and the flanks, protects them from specials, and they turn into fast mana healers with insane attack bonuses.
That said, I’m new to Platinum, so I’m wondering if that seems like a viable defensive core to pull off. I have a Grimm +6 to put on one flank, and I don’t have a decent holy sniper yet, so it might be Tyr, Sonya or Caedmon next to Rigard.