Venom has recieved a new synergy with Mr. Negative that could make him quite op:

I know it's only 10% MISSING health, but if you combine this with Venom's already insane regen, this could make him broken op. I haven't tested this yet obviously, nor will I be able to anytime soon (f2p lol), but this synergy could make Venom even better than he already is.
If Venom is dupped, he gets +1 genetic memory guaranteed at start of fight and 30-100% chance for another based on sig. That's already a solid chance at regen proc, with two buffs right at the start of a fight. Then he gets another buff every 9 seconds up to 7 buffs (8 w Vulture synergy). Then there's nothing easier than throwing a SP2 to reset all buffs and start gaining them over again. Also, Venom's base hp is pretty high, so any% of his missing hp is bigger relative to many other champs.
Will Venom be op like CMM, Hype, CGR or Corvus? Probably not. But this synergy might strengthen his position in top 5 cosmics imo.