Lord Scratch is a sample scratching effect to be controlled by CC or the internal auto scratch feature.
The auto scratch has an LFO rate and a clock that syncs it.
Default MIDI mappings are: Scratch CC20, Auto Scratch CC15, and Mix CC14.
How it works: an internal wav player continuously plays a 10 second snippet of one song, it gets sampled, then you scratch the sample position.
A clock goes through a table of 128 fixed values, the first records the audio(heavily filtered & distorted) from the internal waveplayer, then it holds the sample for the duration of the remaining 127 values. This process takes about one minute, the sampling part takes about one second or a bit less, so for every minute of use you actually have about 59 seconds of scratching potential, and the other second is silent.