Graft Yuan-Ti Flesh( Serpent Kingdoms, p. 146)
You can apply yuan-ti grafts to other living creatures or to yourself.
Heal 10 ranks, Yuan-ti,
You can create yuan-ti grafts (see Yuan-ti Grafts in Chapter 10) and apply them to other living creatures or to yourself. Creating a graft takes one day for each 1,000 gp in its price. To create a graft, you must spend 1/25 of its price in XP and use raw material costing one-half of this price.