Ascension Keystone Tertius detail

The Ascension Keystone Tertius is a rare drop from the slayer monsters in the Monastery of Ascension. It is required to unlock the door to Legio Tertius's lair, so you or your slayer partner must have one before entering.

Drop sources

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For an exhaustive list of all known sources for this item, see here.
Source Combat level Quantity Rarity
Legio Primus3041Rare
Legio Quartus3041Rare
Legio Quintus3041Rare
Legio Secundus3041Rare
Legio Sextus3041Rare
Legio Tertius3041Rare
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