Caleb was exhilaration when he first read the description of the Hardening ability that he had received. It was the most needed now.
Hardening I (Active)- The taboo energy in the user's body has obtained a qualitative change. This ability would enable the user to harden the Gum Gum Rubber whilst still retaining its sticky and stretchy properties. Furthermore, the user would be able to harden his entire body and increase the body's resistance to physical, energy, and elemental attacks.
Note: The Hardening has levels. Hardening I mean the ability, would only increase the defense to a level comparable to silver steel. Hardening II's defense would increase to the level of gold. Hardening III, Platinum and so on...