The Verbos Electronics Polyphonic envelope module has 4 envelopes which can be triggered individually or run in cascade mode where they can be triggered sequentially with an offset time and level which can create interesting pattern like effects.
More info: https://www.verboselectronics.com/
NAMM 2003, Ed Sheeran, Wingie 2
And more - from back in the day
And a host of other features too
New native instrument from the Spark range