The Preta Path, grants the user the ability to absorb chakra in any form. Pain channelled the Preta Path through the corpse of a Kusagakure shinobi.
This ability is primarily defensive in nature as it is capable of absorbing chakra from an individual through physical contact. In addition to this, the Preta Path is able to absorb ninjutsu-based techniques, thereby nullifying their effect. This is done by forming a barrier around the user's entire body, allowing them to absorb attacks from all directions.
Although the user is still vulnerable to the effects of turning into a stone statue from absorbing too much senjutsu chakra.