There are 3 important parameters for a wave : the frequency, the amplitude and the phase. We can already change the frequency and the amplitude of the LFOs but i cannot find anything concerning the phase. Changing the phase is like time travel

One could create a custom wave but it is more tedious and the phase would not be modulable by the matrix.

For example, this is cos[ cos(2*t)*t ] (frequency change) :

This is cos[ t + cos(2*t) ] (phase change) :

Very different results !!