Regarding binds, I have bryll top, bryll legs, spinebeam staff, and frac 2h. My ammo bind is cosmics. Possible switches include removing bryll legs for a shield and switching frac 2h for frac maul. I think most dgers use frac 2h due to the old system where 2h > maul, but maul may be better in eoc (probs needs checking). Cosmics are the best ammo bind, hands down. The only reason one should not have cosmics is if they don't have 54 runecrafting. Blastbox is very unnecessary as an air staff bind for air blast is sufficient for all the monsters weak to magic. Law binds do not allow for leading. I find that the best style to use for mob rooms is magic, due to the AoE F2p ability Chain. There aren't any other AoE abilities (other than ricochet, but if you have cosmic binds, you won't be ranging). Magic seems to be stronger than melee in dg atm.