Its when fighting the appropriate element. Doesnt boost your personal elemental magic, but your damage to those elements.
Im sorry but i DO NOT agree with this statement. Idk if you noticed but it will say clearly on xtals whether it will boost dmg to the element or not...on shojo and here are the stats here...
◇ Shojo Lv185 Wind, Fire, Earth, and Water Element Damage +5%, MATK +5% when equipped to an armor
◇ Wargvel light, neutral, dark element+5% matk+5% in armor
You notice it says 'Wind, Fire, Earth, and Water Element Damage +5%' Not 'Damage to WInd, Fire, Earth and Water +5%'
They may sound the same but they are too completely different things, asobimo knows what they meant...See if you look up spectors stats it will say..
◇ Spector
Get: Spector Lv138
Physical + 5% to fire, water, wind, land attributes: effect
See? Iruna will differentiate Damage
TO an element and Element damage. IF you looked at shojo it did
NOT say 'Damage
to WInd, Fire, Earth and Water +5%'
So it must mean that Those elements power is boosted if you understand what i mean..
◇ Jo Shaw
Get: Jo Shaw Lv185
Effect: When equipped to magic power + 5% body of fire, water, wind, land attributes, MATK + 5% more