Mammon

Mammon (強欲之王 「マモン」) is Yuuki Kagurazaka's Ultimate Skill. It had evolved from Unique Skill Greed after his defeat to Guy Crimson.

Abilities
It allows its user if all the original base abilities of greed it enhances their abilities further and it also allows the user to take someone else's skill it can be any type of ultimate skill or a regular skill.

Trivia

 * The word Mammon in Hebrew is money and it is related to how money is the root of all evils.