So, what’s the problem then? In online play, it doesn’t make sense to sacrifice half your troops for the Devil. The early-game development is very weak, and there are no ballistas, and the secondary Barbarian upgrade hasn’t been taken. Also, if Pyrrhia has captured a territory, she should have the book by now if she plans to take the Devil’s Lair. If I were playing, I would probably choose this method for taking the lair: build similarly, upgrade the Magogs to level 117 (this would also be useful for taking the Barbarian Castle), then the Pegasi are killed with minimal losses, and then the Devils are also taken without problems. The cannon can be upgraded to advanced level normally, and it will probably even become an expert.