Legio Primulus is a miniature version of Legio Primus that can be unlocked as a pet from a Corrupted Ascension signet I, which is obtained as a drop from killing Legio Primus. 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 Primulus can be summoned from the pets tab in the hero interface.
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