[Academy] Abyssal Echo

Description

A mysterious orb wreathed in blue light. Hold it to your ear to hear an echo akin to the deep sea. Use it in the Olvia Academy Colosseum to summon a monster steeped in mysterious power.
※ Use it in the designated location to summon gigantic monsters.

※ You will not be penalized for being killed by the summoned monsters, but a party is strongly recommended because of the difficulty level.
※ If you are in a party, only the party leader can use the Abyssal Echo.
※ The boss will disappear after 2 min of idleness, or after 30 min of being summoned.

※ Available as an Olvia Academy student.