As suggested by the title of the article, this deck wants to stall the game to the point that Tamatoa, So Shiny
Urza, Prince of Kroog is a neat artifact copier, while Mishra, Tamer of Mak Fawa has a powerful MTG Ward effect, and shows off one of the set's major returning mechanics - Unearth
This means that Teferi generally gets more powerful at twice the normal speed of any other planeswalker, letting you take extra turns far more frequently than is generally considered polite
What you wouldn't see in your average colorless deck is the twin return-to-hand engines of Blood ClockBlood Clock and UmbilicusUmbilicus
It's legendary so you can build around it, and its White's answer to Goblin Welder effects which tap to sacrifice an artifact to recur one
What made the card in Texas so valuable