Marbles Item Tree

Name: Marbles, Expanding Marbles, Explosive Marbles, Elemental Marbles, Sealing Marbles, Custom Marbles
Requirements: Marbles(Universal, can be brought), Expanding Marbles(Universal can be brought), Explosive Marbles(Universal, can be brought), Elemental Marbles(Must be made by a Ninjutsu Adept and requires a Marble.) Sealing Marbles (Must be made by a Fuunjutsu Adept, requires a marble), Custom Marbles( Must be made by one of these combinations Weapon Adept/Ninjutsu Adept or Weapons Adept/Fuunjutsu Adept or Weapons Adept/Puppet Adept.)
Item Type: Marbles
Elemental Type: Any or None
Picture: Varies
Description: A marble is a ball shaped out of some form of stone.
Materials: Stone and a Grindstone
History:
Abilities:
Basic Marble: None beside for being able to trip an opponent of throwing/launching them at an opponent.
Expanding Marble: When the make contact with a surface it expands to a diameter of 5 meters causing an additional D rank worth of Blunt Damage upon contact.
Explosive Marbles: Upon contact with a surface damage damage to it equal to one explosive tag.
Elemental Marbles: Have the power of the sealed element at C rank. When they make contact with a surface they release their element.
Fuunjutsu Marbles: Are marbles sealed with B ranked or lower Fuunjutsu.
Custom Marbles: Are marbles that a given a hidden ability not listed here(like Floating Marbles or Invisible Marbles)
Total Price:
Marble: 2 Ryo
Expanding Marbles: 10 Ryo
Explosive Marbles: 25 Ryo
Custom Marbles start at 50 Ryo

Price of elemental marbles and Fuinjutsu Marbles? Also elemental marbles can only be elements you possess. How big do Expanding marbles get? Custom marbles need an explanation other then they are custom, because all the other marbles you are registering are technically custom as well. So by that I assume custom marbles have some sort of hidden ability?

DONE