Balor boss fight
I have the same experience, except instead of stones, I used balloons. The worst part, for me, is that almost all the previous boss battles required some sort of strategy. This guy's just all about using brute force and enduring him. There's no strategy whatsoever.
I used pets in command mode so they can attack balor when he grabs since im an elf i had to do magic on him. when he uses the flame thing on the middle desummon and summon a diff pet and soul link it to it. Divinity also helps with celestial spike for stacks. at 50 stacks wide range attack works. easy 50% HP in the beginning.