Hey Borg999 just a note, the AI casts multiple times on spells like Tornado if it has more than one champion who can cast that spell, just like you as the player can do. Having said that I do not know if this is glitched, it very well could be there are still a lot of bugs in 1.2, such as
Sovereign disappears when attacking a city (late game) and then after the battle is defeated even though none of the rest of my army is even injured.
Sovereign dies whenever I cast Curgens Volcano.
Game crashes often at end of turn (late game).
Sometimes my champion units are "cloned" when in an army within enemy territory that is targeted and killed with a spell like Firestorm or Tidal Wave. If in an army with my sovereign when this happens, and the sovereign doesn't die, the killed champions appear in my nearest city to recover but also stay in the army with my sovereign, effectively cloning the units. While kinda handy, I think this might cause other bugs later...?