1st annual offline tournament "Best Of The Best"

You need 2 Archons. One needs to move away from the cell where the force field is cast, and the second is needed to cast this force field before the Black Dragon's turn. Also, the gargoyles serve as bait to lure the Black Dragon into the direct line of fire of the titans.
My hero didn't have the Tactics skill.

I'm not arguing – but even without the gargoyles, the victory would be obvious with the specified tactic, it would just cost more mana. However, I just realized that the titans wouldn't have initially positioned themselves in the corner if all the slots weren't occupied, so for this purpose, you could have taken 5 any monsters...