If you’re still talking about changing patterns using MIDI Program Change messages, then you have two devices that can do that:
It’s probably easier to work in Single Mode and set the Global MIDI channel number on the Venom. You need to set it to the same number that is set on the M:S for the PCH IN setting in the CONFIG > MIDI > IN CHAN menu of the M:S, described on page 40 of the manual.