The obsidian cape is a piece of the Obsidian armour and can be bought from the weapons shop in Mor Ul Rek for 90,000 Tokkul or be obtained as a drop from TzHaar monsters in the city. It is a popular choice for players who do not have the skill or stats to obtain a fire cape or a skillcape.
It has no requirements to equip, and is prized for its high defensive bonuses which match those of an untrimmed Cape of Accomplishment. It is one of the very few capes to count as “warm” wear at the Wintertodt, the others being the fire cape (along with its max variant), the infernal cape (along with its max variant) and the firemaking cape.
, A reversed colour version may be obtained as a master clue scroll reward from Treasure Trails.