Etherian Mana

Etherian Mana is used to summon Towers and Traps in the Old One's Army event. It has a high chance to be dropped by all of the Old One's Army event enemies. Each wave will produce Etherian Mana in multiples of ten - after receiving a starting amount of ten when activating the Eternia Crystal, each wave will produce either 20 or 30 Etherian Mana. Each Tavernkeep's sentry costs 10 Etherian Mana/Use, so conserving Etherian Mana and developing a strategy is key to the event. This item will disappear after the invasion has ended, along with all event enemies.

History
Mana d'Etheria 埃特尼亚魔力