marzex doesn't really do a lot of dmg from his arts except endless, and ta is faster than sa in terms of trying to break marzex so you can do dmg to him in the first place. there's not a specific ai command that makes him sa only after break, so i just chose to ta with him until the 30% threshold, where he starts to sa in preparation of the endless nuke. you can choose to sa with him entirely ofc, might be slightly slower but you'll most likely get the same result