I always liked Crono Marle and Frog, cause of Arc Impulse. Plus Frog has Heal for minor heal on all (well, so does Robo, but they dont have an offensive Triple Tech) And Ice Water attacks multiple enemies. So I just have Crono Confuse the Left Bit and have Frog Leap Jump then have Marle heal when needed and have Crono luminaire the crap out of everything.

Or I replace Magus with Marle cause Frog can do the healing while Crono Luminaires and Magus Black Matters thye crap out of everything. Work for me all the time.

Plus, everyone has a Gold (something) that decreases magic by 75%. You can steal them from little pink flying things in the Black Omen near the end of ot. And you can also steal Speed tabs from the guys that are part of the wall. AND you can steal Poewr Tabs from the Guys that appear out of the vortex things and look like a Yellow version of a previous boss. Youll know whenyou see it...