My last 5e session we are level 7 and we were up against 30 hobogoblins and a cr 11 devil. Surprise round I took out the hoboglins with an aoe. I'm a caster so I have blast spells: ok, good. Next round I thought I can shoot this guy or throw out a hynotic pattern. I threw out the pattern and it stuck. We tied the devil to something and proceeded to take turns murdering him. The fight ended up being very silly and anti climactic. something just fundentally not fun about that.
5e's solution is legendary resitances, pathfinder has the incapacitate trait. Both have issues their issues, but I feel like it makes sense to address this problem in some way.
