Thanks for your comments. I'll be happy to share the patch. Make sure to remove the .txt extension before importing into your Helix.
The whole thing is quite simple (I'm doing this off the top of my head as I do not have Helix next to me right now) the delay is a transistor tape set on a parallel path, it is preceded by an overdrive (the Klon if I remember correctly) and followed by a low pass filter to get a bit less sparkle on the repeats. It all goes into the Archon Clean as a sparkly platform. There are two snapshots in the preset:
Snapshot 1 - Expression pedal controls feedback. To get the "self oscillation" simply crank things up, as the repeats add up slowly bring the pedal back to a comfortable level, crank it back up and you can repeat forever with fun effects to be achieved by rocking the pedal rhythmically to create new patters. You can also step on the "Time" switch multiple to get the sync to 1/8th triplet notes, to get some fun space sounds as the time ramps up/down.