User blog:Mich, Michele & Kuhla/Guide: Extra Skill Learning System

Overview
Coming soon to Japan version and even sooner to Global, the Extra Skill Learning System allows your 7* units to learn a second Extra Skill. How so you ask? Well you will need "Elgift." (Left)

Elgift will come in various rarities (1* to 5*) and higher rarities will give you better second Extra Skills. But, higher rarity Elgifts will also be harder to get since they're only available through summon promos.

How Elgift works
Once you've acquired an Elgift, you can fuse it to only 7* units. It will not be selectable for any other rarity. Once you've fused Elgift into a unit, that unit will learn a second Extra Skill! If you, for some reason, decide to fuse another Elgift into the same unit, the second Extra Skill will be replaced as the original Extra Skill of the unit cannot be replaced. The rarity of Elgift will also determine what Extra Skill you receive. Examples are provided below:
 * A 1* Elgift will give the ES "10% boost to max HP"
 * A 2* Elgift will give the ES "Boosts damage dealt during Spark"
 * A 3* Elgift will give the ES "Nullifies Poison, Sick and Weak status ailments"

Elgifts are available as rewards for Summon Promos.

Emgift
The counterpart of Elgift, Emgift will remove the second Extra Skill of a unit. It cannot be used on a unit which has no second Extra Skill. Once fused, an Elgfit with the removed Extra Skill will be sent to your presents box. Emgifts will be available through the Achievement System.

List of Extra Skills per rarity
Coming Soon.