How do you beat the doom dragon?

I don't have the best strategy for beating the Doom Dragon, but oh well. I'd say to set all but four earth djinni on standby for Felix, that way you can summon Jugment at least once and still know the Revieve magic. Always keep four djinni on set, (the white names). For Jenna, set all but four djinni on standby, and always leave at least four on set (the white names), that way Jenna can use cool aura, witch heals all party members. Use cool arua as often as you think you need to use it. Set all wind djinni on standby for lots of damage with Sheba. Set all water djinni on standby for lots of damage. On your other party, Isaac, Garet, Ivan, and Mia, set ALL djinni on stanby. Incase your first party dies, you can still do lots of damage. Attack and strengthen your party as much as possable with djinni. Use the Ether djinni alot. You will need to restore PP. If you keep attacking, eventually you will win.

Now about the Djinni, you're missing the Venus djinnis Petra, Sap, Salt, and Vine, the Mars djinnis Core, Corona, Flash, Shine, and Spark, the Jupiter djinnis Gale, Gasp, and Kite, and the Mercury djinni Dew, Serac, Sour, and Tonic.

LOCATIONS

Petra: North of Shaman Village on the other side of the mountains in the forest.

Sap: Might find in Treasure Island.

Salt: In Contigo, in the middle of a patch of weeds, use Scoop.

Vine: May find in Treasure Island.

Core: Southeast of Jupiter lighthouse in forest. To get there, use the beach on the west.

Corona: May find in Magma Rock.

Flash: May find in Magma Rock.

Shine: In Contigo, in stump. Requires the Force spell from Golden Sun transfer.

Spark: In Mikasalla. Need Scoop.

Gale: In Treasure Island.

Gasp: Trial Road. Need Lift.

Kite: May find in SW Atteka Islet. Need Lift.

Dew: May find in Prox, in empty parents house.

Serac: Islet Cave ( Turtle Cave, requires Teleport).

Sour: Northeast of Mikasalla, in the wild.

Tonic: May find in Prox in empty parents house.

I hope this extremely long answer helped with something.

Summons are useless unless you use Eclipse, Iris and Charon. Have at least two people with grp heals and have Isaac and Felix use the Excaliber for the most damage. Resistence buffs are good also.