It pains me to say this but… I’ve been in a number of battles where an enemy troop had full mana & ought to have cast, but instead of casting the spell–or even taking a four gem match–the AI took a three match and handed control to me.
There was one example–a Maw/Mercy team with the most perfect board setup, just a whole row of yellow and purple gems one after another, would have made for an instant Maw cast. The Empowered Mercy didn’t cast (!!!), I got the board and averted disaster.
This was so crazy I’ve been on the lookout for other examples.
I just had a Crimson Bat/Soothsayer team where the Empowered Soothsayers waited a couple of turns to cast & then the pumped-up Bat, once it had full mana & could have killed one of my troops with a cast, took a 3-match & gave me the chance to kill it first.