A while ago @bolandross asked a question about one-shot LFOs (i.e. simulating a second envelope). Back then I said I can’t think of anything aside from using slow Tremolo with fast decay. Well, turns out there is at least one other trick you can employ.
Apparently, the key-triggered Value LFOs (i.e. the ones without letter F) are triggered separately for each key. Maybe it’s an obvious thing, but I assumed they work differently. With this property in mind, it’s possible to dial down the frequency of Value oscillator such that it only goes up during the attack and release phases of your envelope. (This assumes sustain is set to 0.)
You can achieve some rather interesting effects this way.