Battle of the Celestial Gates

Another issue has emerged: if you play with enhanced AI that focuses on spells (as recently shared), it's impossible to win the final battle. Imps will continue to gain mana despite being targeted, and without mana, victory is impossible. Unless you get extremely lucky and manage to attack them repeatedly, which isn't very realistic.

Perhaps their numbers could be reduced, and someone else added in their place, or simply reduce their numbers.