Crippling Fatigue

A removal spell you get to draw twice: cast it once from hand, then buy back the same -2/-2 from the graveyard later for less mana and three life. That second cast is the design idea worth dwelling on. Black has never lacked for creature shrinkage, but Crippling Fatigue folds two answers into one card slot, which is the deckbuilding currency that matters in attrition decks where every draw step is a fight over the last threat. The flashback cost trades back exactly what the spell saves you: one card kills two creatures across two turns, so the life payment exists because casting the same removal twice is worth a real tax. Three life off a graveyard recast is the kind of price a midrange black deck pays without thinking and a deck already short on life weighs carefully, which is the friction the design is after. The -2/-2 is the honest limiter: it cleanly finishes off the small utility creatures, mana dorks, and chump-blockers that clog a grind, and runs out of reach on anything sizable, keeping the card a scalpel rather than a catch-all. What lifts it above filler is that it answers the recurring problem of running dry in a long game, one card papering over two turns of pressure, with the graveyard doing the storage and life points doing the accounting.