Why don’t you play as the Academy?

A Mage becomes a powerful Mage after level 30+ and when they have a larger army. At level 30+, with the "All-Seeing" spell, combined with "Counterspell" and "Mirror Image," it becomes very difficult for Warlocks and Undead to fight. The Mage moves so quickly that they can cast "Counterspell" and still have time to cast other spells (and "Mirror Image" can also create surprises for the opponent). Before level 30, the troops have weak stats, similar to those of the Undead; their attack and defense values are low. I focus on leveling up the "All-Seeing" spell. I don't understand why people use libraries and other magic sources; it's difficult, but once you've leveled up this super ability, you don't have to worry about finding spells.