HP Absorb[blue] = Comet[green]
MP Absorb[blue] = Comet[green]
MP Turbo[blue] = Comet[green]
Quadra Magic[blue] = Comet[green]
Sneak Attack[blue] = Comet[green]
W-Magic[yellow]

That makes for easy battles. When the battle starts a boosted Comet2 is cast four times, restoring HP and MP. If anything is left alive you can W-cast it for another eight rounds of celestial rain.