EQD always makes good pedals, and they definitely have some great reverbs. This EarthQuaker Devices Afterneath v3 is no exception. It creates some cool textures and lets you get into the nitty gritty with their controls. Control length of the reverb, sure. Control the spread of the reverb with the "Diffuse" knob, the separation of individual drag lines with "Drag," and the feedback of it all--even better! You can then put an expression pedal to control the drag and get some wild noise options. The "Dampen" knob lets you control some of the shriller possibilities by rolling back the treble. Other possibilities? Put it before your fuzz and dirt to change their tone quite impressively. 

This version 3 also has a mode knob. Here's what EQD says about that:

The Modes control changes the way the Drag control functions. The LED will change colors indicating which mode you are in.

1. Unquantized: Smooth, unquantized response over the operating range

2. Unquantized with Slew: Smooth, unquantized response over the entire operating range, but with a musical slew that is reminiscent of turning the varispeed knob on a vintage British tape delay. The “Drag” will lag behind the knob or cv changes, but then quickly catch up.

3. Unquantized Volt/Octave: Smooth and unquantized, yet scaled to align with the 1v/octave curve to allow melodic modulation of audio in the buffer, or control the frequency of self-oscillation like a voltage controlled oscillator.?

4. Chromatic Scale: Quantized 1v/octave to the chromatic scale?

5. Minor Scale: Quantized 1v/octave to the minor scale?

6. Major Scale (Lydian): Quantized 1v/octave to the major scale (Lydian)?

7. Pentatonic Scale: Quantized 1v/octave to the pentatonic scale?

8. Octaves & Fifths: Quantized 1v/octave to omit all but octaves and fifths?

9. Octaves: Quantized 1v/octave to omit all but octaves