Strymon NightSky

https://www.strymon.net/product/nightsky/
NightSky is a reverberant synthesis workstation, and a powerful, hands-on experimental sound design platform. NightSky gives you real-time continuous control of reverb pitch/processing rate/core size, harmonics, and even a synth-like resonant filter with multiple modulation waveshapes, plus a step sequencer with variable glide. You haven’t heard a pedal like this before.

NightSky evolved from a desire to push the envelope and challenge the conventions of traditional reverb while also paying homage to the experimental reverberant sounds from decades past.
It started with the variable rate core. Once that was nailed down, we knew we had to complement it with a set of sound-shaping features that could take full advantage of the unique possibilities and expand them exponentially. This led us to a full-featured modulation section, a 4-pole resonant filter, and a unique Voice section to control the reverb’s harmonic structure.