Heroes VII

Hey everyone, has anyone completed the last map as the Mages? What's the best strategy for completing the map, developing Fahada, and defeating Kasim? I built a bridge to Kasim's island, but I had to give up my town and two powerful enemy creatures. Melizenda and Luna are now rampaging through my territory. Melizenda wiped out the Orcs. There's no one left to help deal with them. One option is to stay in my town, defeat Melizenda, and slowly rebuild my army to take out Luna. But if I leave the town, Luna will try to capture it while it's empty. I can't hire another hero in my town, so Fahada has to do everything. I tried surrendering my town and attacking Kasim, but it didn't work. He won and summoned an elemental, which killed my warriors. I have the "Flower of Dolora," but it doesn't seem to help much. I don't have enough troops: 5 Titans, 35 Rakshasas, 83 Mages, and about 350 Cabirs aren't enough to turn the tide. I wanted to get the Elemental Summoning skill, but I couldn't find it on the map. There's only the Ring of Elements near the purple castle, which is guarded by about 30 Titans. For now, I see only one option: defeat Melizenda and stay in my town, building up my forces. I tried to defeat Luna, but she always manages to knock me out of the game. There's no way I can reach Melizenda's town right now. Luna is guarding my castle and the surrounding area.