It remains to be seen if Wizards will release more cards of such rarity in the future.
Finally, a highly disruptive sideboard plan, including Thalia, Guardian of Thraben, might be enough to stand up to Izzet Epiphany
Do Cost Increases Affect Commander Tax
When paired with massive amounts of mana or even combos capable of creating infinite mana, Oona can mill massive chunks of a player's library at a time, even milling an entire library if infinite mana is involved
Not to be confused with Sagas that flip into creatures, which appeared in Kamigawa: Neon Dynasty, these are cards that are both enchantment sagas and creatures at the same time
Special sets in the Pokemon TCG have become something of a regular occurrence now