Yes, a Nisei snake deck.

Deck confiscated from a friend in my local meta, after having time to play it here's what I've switched it to. Asterisks for my changes

House of Knives combos with Mamba to make sure that the runner keeps a full hand *Kept Mamba for tax, but HoK are out, not a kill deck.

Labyrinthine Servers Use these tokens with a bullfrog to force access on a Project Junebug or Psychic Field.

*Braintrust Fits in as a better 3/2 that given the window advances to an econ boost

The Future Perfect will be somewhat safe in your HQ and R&D *Until you have the windows to score

Mental Health Clinic, Sundew, Celebrity Gift, Hedge Fund, And Medical Research Fundraiser for economy. *Traces are expensive, lots of econ to allow pumping traces possible

Snowflake is a great value tax on the runner if they try to break it.

Bullfrog on the inside of a server is a big headache for the runner if they are trying to figure out the math of getting into a server. *Or on the outside as another psi game, heck throw 'em three deep, it's hilarious.

Viper, Caduceus, Uroboros are all great taxing EtR ice. *And that's the theme of the deck!

Mamba is the stuff nightmares are made of. *Or Jinteki Dreams