Hey! Has WOTC printed any material even mentioning red/green steel (the old Planescape special materials, not the campagin setting). If so, does any remember where? Thanks!
~F.W.S.
Green Steel was described in the module Lord of the Iron Fortress. It costs 2,000 gp to make a weapon from Green Steel, which gives the weapon a +1 bonus to damage which stacks with the masterwork bonus to hit.
So effectively, for 2,315 gp, you can have a longsword +1 that is non-magical.