The Elderspell

A story-mode card that reads like a story-mode card: written as the moment Bolas cleared the board of every rival planeswalker at once and cashed their power into his own. Mechanically, it is a mass planeswalker removal spell in a color that had almost never gotten to touch planeswalkers cleanly, and it hands over that answer with no cap on targets and no restriction on whose planeswalkers you point it at, including your own if you want the loyalty payout. That last clause is the wrinkle: destroying planeswalkers is the mundane half, but converting each kill into two loyalty counters on a survivor turns a reactive sweep into an engine. Aim it at a battlefield full of high-loyalty walkers and the chosen survivor jumps far enough to fire an ultimate the turn it lands, which is the kind of asymmetry that only makes sense when planeswalkers are dense enough to be worth two-for-one attention. For most of the game's history, planeswalker removal meant attacking with creatures or hoping for a stray burn spell; a two-mana sorcery that erases an arbitrary number of them, and rewards you for the count, is a deliberate answer to eras where superfriends had become a legitimate deckbuilding pillar. The freedom to target your own side is what makes it more than a hate card: it wants a battlefield crowded with loyalty, whoever it belongs to.