In the words of Mid-Fi Electronics:

The modulation from the Deluxe Pitch Pirate (LFO with square and triangle waves) and the Clari(not) (Lumpy envelope follower) in one pedal, modulating a shared delay line!

(The Pitch Pirate with unlocked delay capabilities, the Deluxe separates the depth knob of the standard Pirate into two controls, Depth and Delay time, then adds a Feedback control for multiple repeats and resonances. The Clari(not) is an Envelope controlled Vibrato/chorus/wow and flutter simulator, with the ability to modulate over an octave.)