Skipping Magatsuhi Plunder
So I was messing around with Omagatoki Strategize on Satan and ran into something interesting that I couldn't find documented anywhere.
Satan's AI is programmed to use Magatsuhi Plunder every 3 turns. If he has no allies remaining at the start of that third turn he will always summon allies with his first press turn and then plunder on the second.
However what I noticed is that if you kill his allies and then reduce his press turns in some way, all on the turn he's meant to go for plunder, (either with Chaotic Will or one of the chaos magatsuhi skills) he will only have one press turn, thus he'll summon allies and then end his turn before being able to plunder. He won't try to plunder next turn either, it does reset the 3 turn cycle.
Therefore, if you can consistently kill all of his allies and reduce his press turns on the last round before plunder, you can avoid ever having to deal with Satan's magatsuhi skills or his healing.
Do correct me if I'm wrong on this btw, I only just discovered it and I may be missing something.