I'm reminded first and foremost of Zul Ashur, Lich LordZul Ashur, Lich Lord from Foundations
A card that has been in a certain flavor of green and black decks for quite some time, Hermit Druid provides one of the cheapest and easiest ways to fill your graveyard
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Buy This Card Notes and Rules Information for The Final Days: "Flashback [cost]" means "You may cast this card from your graveyard if the resulting spell is an instant or sorcery spell by paying [cost] rather than paying its mana cost" and "If the flashback cost was paid, exile this card instead of putting it anywhere else any time it would leave the stack." (2025-06-06) You must still follow any timing restrictions and permissions, including those based on the card's type
Of course, shes still vulnerable to decks that prey on double black lotus decks, as well as Void Snare (which can target planeswalkers)
Some collectors even compare the phenomenon to what they call a Nihil Zero set moment, where an extremely rare pull resets expectations about rarity and value in a particular Pokmon TCG release
There were no extensions to Professor Reguss deadlines