Legio Quartulus is a miniature version of Legio Quartus that can be unlocked as a pet from a Corrupted Ascension signet IV, which is obtained as a drop from killing Legio Quartus. The chances of obtaining the item increases with the number of kills recorded in the beasts tab (explanation of drop mechanics). After the item is used, Legio Quartulus can be summoned from the pets tab in the hero interface.
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