This bit walks through the LFO shaping tools inside Meld, Ableton Live 12's MPE-enabled dual-oscillator synth, covering rate, phase, sync, and retriggering before moving into the more unusual waveform options like Wander, Euclid, and Pulsate.
The more interesting territory is LFO effects, a secondary processing layer that reshapes the LFO signal after it leaves the oscillator. Options like Ramp, Sample and Hold, Attenuverter, and Comparator let you transform a straightforward modulation source into something far more unpredictable, and because the initial LFO shape feeds into these effects, changing either one compounds the result.
For simpler needs, the presenter maps the same destination to LFO 2 instead, which offers a stripped-down set of controls without the effects chain. The comparison is useful for deciding when complexity adds character versus when it just adds noise.