Every keyblade has a true form, which will be listed first. Keychains can modify this form to make it something else. All keychains must be applied for or given to your character from another character; if that is the case, its origin must be mentioned in the profile. (Any existing keychains so far aren't effected by this.)
Example: Keyblade: Keyblade Name (Primary Ability, if there is one) Keychains: Keychain Name (Ability) Keychain Name (Ability)
On elements: Elements are usually light or darkness, but can range anywhere on the spectrum. Fire, for example, is a notable exception.