This is a great workhorse card and The Cave of Two Lovers is one of the most memorable episodes from Avatar: The Last Airbender
We've received a transmission from the archives of Duskmourn with information on various legends of the plane
Heck, if you could already cast these cards, why not just cast every spell for
Less is known on this card, but given the previous details, you can assume that 330 cards were printed and given to family members and important Wizards employees
That argumentation applies even more to Legacy than Modern since you clearly see Expressive Iteration being extraordinary in Delver, good in Control and non-existing in absurdly strong combo decks like Storm, Doomsday or Sneak & Show
That will provide some difficulties in terms of options and how to manage certain parts of this challenge, but it makes this part exceptionally simple