Hall of Fame Stage 3 of the BLITZ TOURNAMENT

Yaroogle

Day 1.
Galthran fights his way through neutral creatures along the route shown in the picture (we collect the Cloak of Disruption only after the Sorcerer's Guild). The goal is to capture all artifacts and kill 10 dragons. Stables. Teleport. Seer. Recruit Phoenix. Capture the Castle. Buy Kaitlin. A mutually beneficial exchange for both heroes. Kaitlin takes the Cursed Armor, finishes off the remaining monsters from Galthran (except for the dragons).
Stables. Capture the Castle (we leave the Liches there, and take the Phoenix with us, so that we can move further on the next turn). Open the first Outpost towards the Armageddon's Blade.

Day 2.
We build a Magic Amplifier (thanks to Kaitlin). Galthran opens the Pandora's Box with Azure Dragons... just kidding, with Skeletons, dismantling the Cloak of Disruption to get more Skeletons. Capture the Castle. Open the Outpost near the Fort on the Hill. Well. Exchange with Kaitlin. Open the southern Pandora's Box using the Clone Attack spell. Capture the Castle. Eliminate all dragons, except for the 400 that give nothing. We build Skeleton buildings everywhere, and buy Clavius. Kaitlin goes to Galthran to exchange and learn magic (Berserk). She goes to the Scroll and a large pile of gold. She exchanges the Angel Wings for a Portal. She gives the troops to Clavius. Clavius learns Earth Magic. Stables. Exchange. Level up with 400 dragons. Exchange with Galthran. Learn the Town Portal from Kaitlin. Teleport to the southern Castle. Pandora's Box (Berserk) with the dismantled Cloak of Disruption.

Day 3.
Clavius leaves troops in the southern Castle. Teleport to the eastern Castle. We take the last Pandora's Box and the Armageddon's Blade (for show). Back in the eastern Castle, we leave troops. Kaitlin teleports to all the Castles, collects all the troops. In the southern Castle, she transforms everyone into Skeletons. Teleport to the western Castle. Galthran takes all 20237 Skeletons and upgrades them at the Fort on the Hill.

P.S.
1) Essential skills for Kaitlin: Teaching, Earth, Intelligence, Wisdom; for Clavius: Fire, Earth, Intelligence, Wisdom.
2) Losses were very rare: the tactic is to bait single stacks into taking damage.