I usally do it at the time riona is missing during disk 3.
Squall - Gf magic draw
Selphie - Gf magic restore
Irvine - Gf magic Items
The first thing I do is draw eden from him. Then I have someone cast cerberus and then aura on everyone. Now its just a war of squall and irvine vs omega with there limit breaks. I use selphie to use full-cure.
