dirty pseudosequence by ernie
Rather a raw one here.
Also add sync out from your Keystep or whatever to LFO Shape in to sync with external clock.
When no clock is needed replug osc2 out from LFO Rate in to LFO Shape in.
Play with att 1 (increase lfo uni to filter cutoff modulation) and att 2 to apply envelope 2 to signal chain. Use delay as additional osc.
Feel free for further experimentation.)