Basic Information:

This is a Bonus Drive Form, accessed at random once the gets the Chains Of The Past Keyblade, and once he turns the will have permanent access to this form.

Appearance:

The Chain Form changes the clothing to a brown-dominant color scheme with a combination of brass and silver colors, the symbols change to chains that form an X, similar to the organization sigil.

In this form, it's noted that Three Chains ( which represent the chains of the Keyblade) will follow and obey the ; the will holding its Keyblade backhanded similar to Ventus.

Usage:

The can access the form without having to draw the power from any member and being a weaker than Final it makes up for it by having a unique style in combat and magic use. Combat being the addition of the chains boosting his range and his strikes, and magic by making it less expensive and increasing its range. Though speed is slow it makes it up for strong and powerful combos.

Chain Strike:

Chains will assist you by attacking each time you attack it opponent, increasing damage by 4 ( One being the Keyblade and the other 3 being the chains ).

Chain Of Memories:

Chains will assist in spell casting, increasing the range and strength of the spell.

Rage Awakened:

The rage of the chains will take your enemies out in an all out attack, eliminating those who harm you.

Chain Meteor:

Slamming your Keyblade on floor will make your chains slam in the floor as well, making a powerful finishing combo move to a singular target.

Chain Whirlwind:

While spining the chains will create a whirlwind of high speed bringing your enemies close to you and then sending them of when the whirlwind explodes.

Extreme Counter ( Growth Ability ):

Each time you counter an attack, multiple slices will appear around you damaging your enemies in the process.

MP Hasteza:

MP recharges 2.00 times faster than normal.

Berserk Finisher:

When MP is depleted, you will never do a combo finishing move until MP is Full.

Mobile Action:

Actions will be executed even when moving.

Chain Of Hearts:

Three Chains will assist you while you in this form.

Backhanded Keyblade Style:

Your attacks become faster and easier to manage.

As I previously stated the chains also boost magic, in this case being the Classic 4: Fire, Blizzard, Thunder, and Cure.

Blizzard Magic:

The chains will change to a bright blue color. You will shoot a normal ice shot which the chains will follow, then after it impacts the chains will seperate doing a snowflake effect around the impact area doing freezing damage in the process.

Fire Magic:

The chains will change to a red orange color. As you make a fire ring around you, the chains will also do a ring around, expanding and contracting doing burning damage in the process.

Thunder Magic:

The chains will change to a yellow color. Once you cast the magic, the chains will rise up into the sky the fall back towards the ground in the area thunder was cast doing shock damage in the process.

Cure Magic:

The chains will change to a green color. Once you cast the magic, the chains will spin around you then expand giving you a larger healing area in the process.

Where the real credit goes to since, I was inspired by his Form Wikis, to do something similar to his or her:

Wanderer of Worlds