Legio Sextus

Legio Sextus is one of the bosses in the Monastery of Ascension. Accessing him requires an Ascension Keystone Sextus. Like all legiones, he attacks with magic and is capable of spawning magical lightning on the floor that deals heavy damage if not avoided. The lightning Sextus spawns is larger than the other Legiones, and lasts longer. Unlike the other Legiones, Sextus does not use a normal magic attack, using exclusively lightning.

Trivia

 * Legio Sextus is roughly Latin for "Sixth Legion". However Legio is a feminine noun, while Sextus is a masculine adjective; the correct form would be Legio Sexta. 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.
 * Although Legio Sextus uses his lightning attack throughout the whole kill, he will occasionally retaliate to an attacking familiar with a basic magic attack.