Dragonskin cloak

This opalescent cloak gleams with all dragon colours. It protects its wearer from elemental attacks of all kinds, although somewhat unreliably.

A opalescent scaly cloak

+4 cloak

The fixedart cloak Tiamat leaves upon her demise. When worn by the player, it has a 50% chance of granting one level of resistance to any of the following elements (rolled at the time of the attack): Fire, Steam, Cold, Electricity, Poison, Sticky Flame, Negative energy.

Desirability

Beyond the bragging rights involved in killing Tiamat for the cloak, it can be useful to have a single item that can give you a bit of extra resistance to any sort of attack. On the other hand, killing all the draconians running around in the Realm of Zot has a decent chance of netting you a cloak of preservation, which is an extremely good item.