1. I've noticed how, in tactical battles, the AI can sometimes spam a spell on his own units that start the fight on low health, causing them to die (might be 'berserk' spell). Is this as designed? 
2. If I cast Burning Blade overland on the sovereign, then use auto-battle in tactical combat, he always re-casts burning blade on himself. Does it stack?
3. Debuffs cast on my own cities: do they stack? Should I be able to dispel them individually? (e.g. incinerate city)