Mystic Island is where players can deploy Mercenaries to collect Mystic Dusts every 10 hours. Players can also pillage other players while collecting Mystic Dust. A player can choose to return a team early from collecting for 50% of the collected rewards.
Mystic Island is split into 5 different areas with each rewarding a varying amount of Mystic Dust as well as an extra resource. The areas are as follows:
|Area||Minimum Amount of Mystic Dust||Maximum Amount of Mystic Dust||Extra Resource|
|Mystic Golden Valley||30||222||Gold|
|Mystic Ruins||30||555||Rune Pieces|
|Mystic Crystal Cave||30||925||Crystals|
Opponents are matched based on a player's arena rank from the previous week. When pillaging another player, the defending team will always go first.
Battles can be rewatched from the "Battle Record" for up to 24 hours where players can view attackers as well as take revenge on those who made a successful pillage.
Mystic Dust can be used to purchase items from the Trading Post. These items are refreshed daily, or can be refreshed earlier using 30 Diamonds with the exclusion of the 5★ Skill Book.
The possible items are as follows:
|Rank-up Star / Slimes / Scrolls||Varies|
|Random 3★ Mercenary Pieces||Varies|
|Random 4★ Rune Pieces||Varies|
|Random Amount of Horseshoes||Varies|
|Random 4★ Mercenary Pieces||Varies|
|Random 5★ Rune Pieces||Varies|
|5★ Skill Book (1/Month)||75,000|
|5★ Skill Book Piece x10||1,500|