Elemental Skill

Elemental Skill is a player stat that rises when performing upgrades on weapons or summons. As elemental skill levels up, players gain bonuses when interacting with weapons or summons of the appropriate element. Elemental skill levels can be viewed in the Profile.

When upgrading or uncapping, for each item being used in the upgrade process, elemental skill increases by:
 * 1 for Normal weapons
 * 2 for Rare weapons
 * 10 for S Rare weapons
 * 50 for SS Rare weapons
 * 2 for Angel weapons
 * 5 for Archangel weapons
 * 1 for any summons

The element that gains skill matches the element of the item being upgraded. Upgrading characters or a crew airship will never increase elemental skill.

Upgrade Bonus
Once an element has reach a certain skill level, upgrades for certain rarity characters, weapons, and summons of that element will gain a 20% increase in earned EXP. This applies after any applicable wonders. At skill level 10, Normal weapons and summons will get the bonus. Rare characters, weapons, and summons get this bonus at skill level 20; S Rare at skill level 30; and SS Rare at skill level 40.

Reduce Bonus
As elemental skill increases, players receive bonus materials from reducing weapons and summons.