Played on turn 1 and dealing with it immediately it already replaced itself, while dealing with it with paying for the trigger it already did its job in slowing you down and letting the player gain a tempo advantage
Their enthusiasm for the game shows in how they interact with customers
Pioneer Amalia Benavides Aguirre Cori-Steel Cutter Expressive Iteration Field of the Dead Geological Appraiser Heartfire Hero Jegantha, the Wellspring Karn, the Great Creator Kethis, the Hidden Hand Leyline of Abundance Lurrus of the Dream-Den Nexus of Fate Oko, Thief of Crowns Once Upon a Time Sorin, Imperious Bloodlord Teferi, Time Raveler Underworld Breach Uro, Titan of Nature's Wrath Veil of Summer Wilderness Reclamation Winota, Joiner of Forces It's easy to see a pattern in the spells banned in Pioneer
It then allows you to draw 2 cards, but you also have to discard 2 cards
702.26a Buyback appears on some instants and sorceries
Lore-wise this is actually a wizard who's fallen victim to mana burn, a now defunct rule in Magic which made players' own unspent mana deal damage to them