At the end of your Movement phase, this model can attempt surgery on one friendly INFANTRY or BIKER model within 3". If it does, roll one D6; on a 1 that friendly model loses 1 wound, otherwise it regains D3 lost wounds. Each model can only have surgery attempted on it once per turn.
Dok's Tools:
Roll a D6 each time a INFANTRY or BIKER unit loses a wound whilst within 3" of any friendly PAINBOYZ. On a 6, that unit does not lose that wound.