EarthQuaker Devices Rainbow Machine V2

Definately not for everyone. If you're a sonic adventurer, this thing is wild.
It should nonetheless be noted that the "normal" sounds, like the chorus-like effect when you're not overtweaking it, sound very nice as well.
Conclusion: This pedal, especially the "magic" is whack, but the beauty is the range: you can go from mild psychedelic chorus, delay, pitch shifting, etc. effects to full on fairy pixieland or hellish cascade sounds. Combines well with other pedals.