Wishing for a Forger

[Edi]

Hammer of the Cyclops is a non-forgeable artifact. It appears in a special province with special defenders who you need to defeat and then find the thing after the battle. Or wish for.

[Panpiper]

Yep, wishing works. I never knew about this hammer. Two mega hammers for forging goodness. :-)

[Psycho]

Some pretenders like Deva, Nataraja, Destroyer of worlds and some Bandar summons like sidha and devata (rudra also has 4 hands but doesn't benefit from hammers).