This pack contains 6 new expansion Deep traits for Oceans and was available as an add-on in the Oceans Kickstarter pledge manager as well as Man vs. Meeple Season 3 Promo. Later available during the Game Boy Geek Season 10 Kickstarter campaign and Tantrum House Season 8.
PROMO cards are well-balanced cards, but they are either A) more aggressive, B) more chaotic, or C) more complicated.
These cards were not included with any pledge level, and were not unlocked with stretch goals.
The Deep was designed to be infinitely expandable without throwing off the balance of the game, so you can pick and choose which cards to add to your game.
The Deep traits of promo pack 1 are "Sea Wyrm", "Fast Life Cycle", "Epizootic Parasite", "Nomadic", "Biome Toxicity", and "Osteodermal Kaiju".