Counter venom is automatically lvl 3
You can probably get in a vial by letting them fly before hitting them after the counter
A train scales the combo a bit, so do c.hp or even s.hp before it
Your opponent blue bounced in the last string which means they can tech
Thanks for the advice, it's now a TOD (and I'll make sure to keep ground teching on for the future).
Actual combo starts at 0:08 and the windows error sound is from the video itself.
Countervenom (hold up to ensure jump occurs as soon as possible)
j.HP, j.HK, H Bypass (Floor Bounce will occur here)
s.HK (3 hits), M A-Train Assist (call A-Train halfway between 2nd and 3rd hits of s.HK)
L Vial Hazard, c.HP**
j.MP (5 hits)**, j.HP, Flew Shot (the stronger the better, L works on Big Band)
s.LP (3 hits), c.LK (2 hits), s.MP (2 hits), c.MK (2 hits), s.HP, H Bypass, EKG
** = Insert a very slight delay before the next action (the video itself doesn't account for this as much as it could, you can delay for a couple frames to make the final air-to-ground links much easier to hit)
After a bit of testing I have confirmed that this setup is universal, though during the final string you will need to omit the c.LK/s.LK on the following characters:
AKA the Light-weights and the smaller falling hitboxes.