Sangrite Backlash

The hybrid mana symbol is the clever part: you can cast this with either black or green alongside red, which lets two different color pairs share the same removal slot. The effect itself is a static debuff Aura, and the math is what gives it reach. A flat +3/-3 kills anything with three or fewer toughness outright, which covers most of the small-to-midsize creatures that make up a board, while quietly leaving the targets it cannot kill (the big toughness threats) as bigger attackers, since the +3 power rider lands on them too. That asymmetry is the tension a sorcery-speed Aura has always had to negotiate: it commits a card and the mana before combat, with no way to respond to a flash blocker or a pump spell, so the trade only ever feels clean against creatures the toughness reduction can actually finish off. Aura-based removal lives or dies on whether the toughness number lines up with the format's curve, and a -3 sits squarely in the band that catches the most bodies for the least mana. The wrinkle is that this is still an Aura: it can be undone by bouncing or blinking the creature, and it does nothing the turn the opponent simply has no creature worth enchanting.