Earthquaker Devices (EQD) have a lot of fun with their releases so when they announced their Envelope Filter / Auto Wah people watched!
A lot of players avoid these types of effects as they're either seen as "Something a bassist uses ... ya know, like compressors" or when they've tried them in the past they were one trick ponies and that trick wasn't great. What EQD have managed to achieve with the Spatial Delivery is a very simple to use pedal featuring a metric tonne of amazing tones.
Yes you can achieve the auto wah effect but there's so much more going on here even heading into the forbidden realm of SYNTHESIS. Go, play, enjoy!