A very famous phaser circuit. The schematics is based on https://www.electrosmash.com/mxr-phase90
Since JFET isn’t available in EveryCircuit, I needed to use MOSFET instead; I needed to tweak circuit a bit for DC biasing. I’ve also needed to replace Low-Frequency Oscillator (LFO) by 555 timer IC since LFO was way too slow on the simulator to see the effect.