Right now, combing through Magic Online decklists, I see a ton of people playing Search for Azcanta, but thats just one of many important lands that you need to be able to interact with
Youll have to ask yourself some questions: are you willing to give up early field control to bring out Gilded Lotus early, can you stall for five turns without losing, and do you have a powerful high-cost card that can swing the game in your favor if you can cheat it out early
However, back to the card at hand
Myriad becomes a blank ability in formats like Standard or Modern
Counter decks have had a ton of support over the years (including in Streets of New Capenna, where the precon was released alongside), and Bedecked Brokers has many of the best counter cards
If you play her, every opposing character takes one point of damage