Ability Unit

Ability Unit Ⓛ is a weapon panel linkable to any weapon with a link zone. Ability units add an unlockable ability to any weapon so long as they are actually equipped. These are avaliable in Kingdom Hearts 358/2 Days. They can obtained from the moogle shop under "Buy", and can be obtained by Redeeming Challenge Sigils or Mission Crowns at the Moogle Shop.