Heroes 5.5 WarGame Edition - Tactical Edition.

I'll repaint it...

I've already repainted it, more or less.
However, I'd be happy to accept your more professional version as well.
As a basis for the divine vengeance, I personally chose the Divine_Wrath icon; it seems like it should fit the Darkness theme better, but it would also be interesting to see what a natural Vengeance looks like.

The spells of the Seraphim and Shadow Witches will also be changed.
The Seraphim will receive the Vampirism spell (for 4 rounds) instead of Divine Vengeance, and the Shadow Witches will receive Divine Vengeance instead of Vampirism.
The reason is that dark units should not have access to Light spells (even though Vampirism requires both Light and Darkness).