extra turn mtg cards card that can chain turns forever doubles in price Orim's Chant from Planeshift (2001).

Dr Madison takes the deck in a new direction though in Jeskai (Red, White & Blue)

Due to how unique the effect is and its lack of reprints, this is the most expensive card in the drop at around $17

That story was also a bit strange, and, according to Mark Rosewater, did not resonate with fans

But what did you think

Gemstone Caverns: A close second is Gemstone Caverns

Wake the Past Getting its first reprint after its initial release in Commander 2021, this 7-mana reanimation spell is a splashy spell that can win the game in the right conditions, and provides some resilience against board wipes, as long as they dont exile your cards rather than destroy them