Mastodon’s Brent Hinds and High On Fire‘s Matt Pike have teamed up to create a KHDK “Unicorn Blood II” guitar pedal. You can pre-order that at khdkelectronics.com. Here’s a description of the pedal: “Unicorn Blood II is a space-themed brother to the original Unicorn Blood. Now covered in cosmic glitter, with an even tighter fuzz…