Harmony - Troop Symmetry

You can link the name to a Castle, for example, "Monument of Justice," or something epic like "Doom of Sinners."

If we develop this theme, we need to consider that the "Divine Retribution" spell has been renamed to "Recompense." In the "Doom of Sinners" option, it would be better to replace the word "doom" (it has a Necromancer vibe).

Added 6 minutes later
By the way, in Heroes 6, Humans have spells like "Doomsday" and "Higher Justice." We can draw inspiration from them to come up with something.

Added 5 minutes later
Ideally, I think we need a statue of some judge holding either a hammer or scales, or we could take the "Elrath's Watcher" statue and reduce it to the size of one tile.

Added 58 minutes later
By the way, given its situational nature, should we move the Holy and Unholy Word to level 4?