Transparent Moonlight: Elastica is a Teigu in the form of a mask. It is currently in the possession of The Revolutionary Army.
Elastica allows it user to stretch and deform his or her body into any form imaginable and can also change the user's body mass. This means the user can reach the branch of the highest tree or shrink into the smallest grain of sand. This is essential for quick get-away or passing through obstacles. Also the clothes worn by the user also deforms according to the body.
Although the Teigu proves to be significant, the strength of the user is maintained.