Yuna, Lulu, and Tidus

Yuna (with Niirvana) nothing like double casting flare for 20,000 each, plus she heals and summons

Lulu (With Onion Knight): Mopre flares and Ultimas, Why not?

Tidus (with Caldablog): Fast, Powerful, and has Haste, and i taught him Flare yes im a pyro