Sage Transformation

is a bodily reaction in those with Jūgo's Clan's Kekkei Genkai to Senjutsu Chakra which results in increased physical capabilities similar to Sage Mode and the possibility to perform various shape-shifting feats.

Usage
This transformation is a multifaceted ability that permits them to achieve feats ranging from creating various weapon-like appendages to even consuming other human beings, as well as a general increase in their physical capabilities.

In the experiments created by Orochimaru, this ability is referred to as. A user can transplant his or her flesh with anyone compatible with such experiments, in the events of a heavy injury, though this will cause the user's body to shrink in size and age.

Drawbacks
While these clansmen can absorb natural energy passively without being turned into a statue, as those who failed to learn senjutsu do, their bodies cannot control the immense power surges that accompany the transformation and as such, are prone to sporadically going berserk.