A chorus pedal, I guess? This thing is a beast. The paint job is a putrid green color but it sounds super lush and deep. It has up to four additional voices you can add over your clean tone, with a detune range that extends beyond what would be usable in a conventional setting. Also has an LFO(low frequency modulation?) mode that is very musical. This is the earlier version without expression control.
Try me via PM. SolidgoldFX Apollo 2, Jam Pedals Waterfall, Sansamp Para-Driver, 3leaf Octabvre... probably some other stuff too.