Collector numbers are ordered alphabetically by color, and both Windswept Heath and Wooded Foothills would come after Vault of Champions, which means both cards arent in the 361 cards that make up Commander Legends and it is highly unlikely Wizards would only print a few of the allied fetches by breaking up the five-card cycle
Theres tons of mana rocks that can generate any color, and this card specifically fits right in with a decent Prosper, Tome-Bound decklist
2019-10-04 Oko's second ability may target a permanent that is only temporarily an artifact or a creature, such as Oko, the Trickster
Resale premiums on CGC-graded cards are lower than PSA equivalents, which makes it a good option if youre grading for your personal collection rather than resale, or for cards where the math still works at CGC prices
The idea behind this decks strategy is KOing opposing threats before they can be fully powered up
Estrids design was moving in different directions, acting as a rather potent auras Voltron piece that, until the printing of Luxior, Giadas Gift, couldnt be the Voltron