Ginormo Sword

Use a fire weapon on poseidon for aquamarine to build up for Efreet. A 260 water weapon will 3hko Efreet ... if that means anything to you. Poseidon however, is replaceable with lizard assassin. I have a 321 fire katana and that doesnt seem to make such a noticeable difference on Poseidon. Only on lizard assassin does elemental advantage actually become useful.

Once you can kill Efreet really fast, he drops alot of gold and alot of rubies. You will also want to spend tons of gold on luck. It improves your chances of getting more rubies and more gold. It'll also improve your luck to find rare monsters (which also usually hurt like hell >.>).

Thanks!