If you want to do zombies, U/B is great because you have 3 solid generals to choose from between Grimgrin, Corpse-Born, Gisa and Geralf, and Wilhelt, the Rotcleaver If you want to focus on Stax, maybe look into Urza, Lord High Artificer, Derevi, Empyrial Tactician, Hokori, Dust Drinker, Michiko Konda, Truth Seeker, Yasharn, Implacable Earth, Sigarda, Host of Herons, etc
Types: Normal trap
In other words, if you want to cast a Stonecoil Serpent while controlling Etherium Sculptor, you can cast it for X=1 without paying any mana, X=2 by paying a single mana, etc
This card is a reference to the Sabacc game where Han Solo won the Millenium Falcon from Lando, and I think it does a good job capturing the spirit of a high stakes card game