Last night, before headlining this weekend’s second edition of the Las Vegas festival Sick New World, Slipknot played a warmup gig at Pappy & Harriet’s in Pioneertown, CA. In doing so, they debuted their new full-time drummer. He was of course wearing a mask, but any Maggot will tell you it’s Eloy Casagrande, who left the long-running Brazilian band Sepultura last month. Casagrande announced his departure from Sepultura in an Instagram post, writing that “decisions needed to be made thinking about new cycles that will come.” By joining Slipknot, Casagrande has finished a weird story about three metal bands basically pulling off a three-team trade.