Increase both HP and SP by 20
Dual Mastery was a passive skill exclusive to AP spenders. It could be obtained via the G's Officer Line Capsule, G's Tamer Set Capsule and G's Battle Maid Set Capsule. It came in 1 / 7 / 30 days versions or a permanent version.
Some time later Dual Mastery was removed from the loot table of these capsules. You can receive this skill from daily presents.
|Active skills||Anchoring · Bind · Block · Berserk (cut) · Flying · Invisible · Metallic · Shield|
|Passive skills||Detect · Dual Mastery · HP Mastery · SP Mastery|