There may be too many exile effects in Standard for the new Phoenix to take flight, but I don't think every deck is going to be packing Magma Spray, Utter End or Silence the Believers
Keep that number in mind, because you can plug that in with the other numbers Im going to give you, and well know exactly how many copies of a card were printed
Altogether, Tidus is a powerful counters commander, even if it never really goes beyond being another counters commander
Card not found is an all-star way to convert energy into cards and an early attacker on top of that, being very effective at gaining an early advantage
Well of Lost Dreams excels in that aspect: A colorless card that probably fits black or white decks
Still, I can see this 6-drop getting outclassed by a future Dragon and cut