Kaotica is a 12db/octave band pass filter modulated by a *Fractal* LFO.

The key of the effect is the Mu parameter, it's the seed for the fractal shape, for each value of Mu you got a different LFO waveform: sometimes close to a random behaviour, other times performing cyclic patterns. Each value leads to a unique shape.
You can set the LFO rate in Hz and the Hardness of the LFO waveform: smooth or hard jumps.