Just return this game

[agnesi]

A Diablo team itself is nothing special, but a lot of members have alternate uses: PR RGB Sprites as leaders with Khaos, Matryoshka in Izanagi, Diablo and Saruman in a Khaos team, Elfish Perennials in Sakura/Rose/Cornflower, Merlin in TSZ, etc.

If you don't have a team that can reliably do overheal, I'd go and train what's most compatible with my current teams. You generally see key members like Matryoshka, Clara or Merlin, or even Diablo+PR Sprite go into teams tackling overheal stages anyway.