|An opalescent cloak gleaming with the colours of all kinds of dragons. It protects its wearer from most elemental attacks, although somewhat unreliably.|
Each time you take damage from one of the following elements, 50% chance to temporarily receive one rank of resistance against it:
Can only be acquired by slaying Tiamat.
The dragonskin cloak is a fixedart cloak which Tiamat drops when slain. Along with its very nice AC level, wearing it occasionally provides you with near-universal elemental damage resistance. Beyond the bragging rights involved in killing Tiamat, it can be useful to have a single item that can give you a bit of extra resistance to any sort of attack, but try to avoid relying on its occasional resistances when facing serious elemental threats; resisting half of an electric golem's Lightning Bolts or half of a swarm of acid blobs' melee attacks still means that a lot of damage is getting through.
The dragonskin cloak was added in 0.10.