Okay, sure, its not going to draw you as many cards as Rhystic, but if you stick it on the right player, and utilize some wheels like Windfall or a Teferis Ageless Insight
This deck focuses on the alternate win condition of Thassa's Oracle, which when played wins you the game if your devotion to blue is greater than or equal to the number of cards left in your library
Dogmeat, Ever Loyal and Preston Garvey, Minuteman are rainbow foil cards
So having them be effectively silenced allowing you to focus on the game rather then watching profanities scroll by may have in fact been the right call by Wizards of the Coast who notably doesnt have a public forum either for any of their games
The mechanically unique cards are found in set and collector boosters of The Lost Caverns of Ixalan which released on November 17, 2023
Wizards of the Coast was not going to take this lying down