Turns 2, 3, and 4.
He played standard, focusing on summoning creatures and using spells. On turn 3, he found the Treasure of the enemy. By the end of turn 4, he cleared the map. At the beginning of turn 5, he used Gate to reach the enemy's castle.
The battle took place in the Mage's castle. The Tome of Darkness and Sandro's Cloak were a surprise, but he still had no chance. Thanks for the game!