Dark Release: Inhaling Maw (HBH)

The user forcibly extracts the physical and spiritual energy of another ninja, even from a considerable distance. It can either absorb the chakra into the upper square of the mark on his left hand or his mouth. It is able to completely remove the victim's chakra, potentially causing death.

After using this ability, the user is able to detect their natural elemental affinity, and then freely manipulate the victim's chakra element and perform ninjutsu of that element. This allows it to deconstruct and learn the abilities of his opponents, and he can presumably utilise all forms of nature transformation as a result.