Hey heckproof! great news! I just updated the deck and added that very card! For now, I'm trying four copies, but that may change. The sideboard will be updated soon with some new toys!

I really like this decklist as I'm tring to get into Infect at the moment but could you explain your use of Teferi in the Sideboard?

Hi Trenchcoatcreep!
Teferi, Time Raveler is another really neat card that works in a couple ways. His plus one lets you cast Scale Up (or Distortion Strike if need be) at instant speed, but the real kicker is his static ability, which when coupled with Inkmoth Nexus , lets you turn him into a dude during combat, making it so that your opponent can't Fatal Push or Path to Exile Inkmoth! And if you ticked up and have Scale Up in hand, that's an unanswerable 6/4 flying infect dude before any other pump has been applied! That's pretty sweet if you ask me. Cheers!