LEGO 70795 Mask Maker vs. Skull Grinder is a 171 piece Bionicle set released in 2015. It features two buildable figures, the Mask Maker and Skull Grinder, with battle arm functions, a Mask Stealer Staff, Hammer of Power with rapid shooter, rotating saw shield, and the Mask of Creation. It was retired in July 2016 with a lifespan of 11 months.

Description via Its a Block Party