Yay! Umbilicus

The "Yay! Umbilicus" deck is a Vintage artifact-control archetype, primarily colorless, focusing on resource denial and board control. It uses the Urza lands (Urza's Mine, Urza's Power Plant, and Urza's Tower) and Cloudpost/Glimmerpost to generate large amounts of mana, enabling the deployment of powerful artifact creatures like Rusting Golem, Lodestone Golem, and Triskelion.

Key synergies include using Smokestack and Tangle Wire to disrupt the opponent's board and slow their progress, while Umbilicus can be employed to repeatedly bounce and replay value artifacts like Meteorite or Alchemist's Vial. The deck aims to win by locking the opponent out of the game through resource denial and overwhelming them with large artifact creatures.