[Soapyfrog]

Alas, while valiantly trying to protect the homesteads of the Jotun heartland, the Green Dragon of Soapyfrog has succumbed to one of Abysia's vile and fiendish constructs. He equips his Golems with hellsword, skullcap, marble armour, boots of quickness, ring of the warrior and burning pearl. Then the golem casts astral weapon, making the hellsword armour-negating. Dangerous, and teleportable! Also, non-routable due to the Hellsword.

The thing is not resistant to cold or shock obviously, and as has been pointed out magic duel may kill it. Masses of undead would also do the trick...