Like most Magic: The Gathering cards, the value of Worthy Cost depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Tarkir: Dragonstorm)
Ty very much for the article
The Commander deck will be one of the five released for Strixhaven, inspired by the colleges: Silverquill Statement, Prismari Performance, Witherbloom Witchcraft, Lorehold Legacies and Quantum Quandrix
At the start of each turn, if there is no revealed bounty card, the next one is revealed, and if the bounty deck runs out of cards, shuffle them again and start over
The extreme version of that deck makes use of cloning effects to get a bunch of 6/6s with a milling attack trigger