Doubling Seasons effect is often imitated but ironically, never duplicated by later doubling enchantments the open-ended wording which allows for instant Planeswalker ultimates will probably never appear on another spell
Prices always spike, then plummet , meaning everyone getting carried away in the opening moments ends up sitting on a card worth a third of what they paid
Most sets now have some kind of similar problem
Phantom Nishoba Loxodon Hierarch Nazahn, Revered Bladesmith Qasali Pridemage Saffi Eriksdotter Mystic Enforcer Knight of the Reliquary Fleetfoot Panther Gaddock Teeg Voice of Resurgence Rhys the Redeemed Tolsimir Wolfblood Wilt-Leaf Liege Sigarda, Host of Herons Sigarda, Heron's Grace Selvala, Explorer Returned Selesnya Guildmage Renegade Rallier Armada Wurm Captain Sisay Centaur Healer Dauntless Escort Dromoka, the Eternal Dragonlord Dromoka Enlisted Wurm Fleecemane Lion Karametra, God of Harvests Kitchen Finks Loxodon Smiter Mirri, Weatherlight Duelist Novablast Wurm Holy crap
One of the easiest payoffs for landfall cards are fetch lands and bounce lands because they represent multiple triggers per land in your hand
This means if we can get our opponent to 10 life during our turn and immediately cast Hidetsugu's Second Rite, very little can go wrong (apart from our opponent doing something crazy like casting a Lightning Strike targeting themselves, which isn't the worst outcome)