Legio Primus

Legio Primus is one of the bosses in the Monastery of Ascension. Accessing him requires an Ascension Keystone Primus.

As with all the bosses in the Monastery of Ascension, Legio Primus attacks primarily with lightning focused in a 2x2 square which deals heavy damage to the player if they stay on it. Unlike his fellow Legiones, the lower his health gets (in 25% intervals), the more damage this lightning attack will deal on the player, similar to that of Dharok the Wretched.

Keystones
All keystone are tertiary drops.

Trivia

 * Legio Primus is roughly Latin for "First Legion". However Legio is a feminine noun, while Primus is a masculine adjective; the correct form would be Legio Prima. Legions were the largest units of the Roman army and there were 6 in a whole army, hence there are six legiones in the Monastery.
 * A few days after release, the Legio's drop table was updated; drops such as bowstrings were replaced with more valuable items such as the magic shieldbow (u).