Miasma Demon

Strategy & Gameplay

Miasma Demon is a versatile mid-range creature that brings both immediate board presence and flexible removal to black-focused strategies across multiple formats. This 5/4 flyer for six mana offers excellent value through its enter-the-battlefield triggered ability, allowing you to discard any number of cards and simultaneously reduce up to that many target creatures' power and toughness by 2 until end of turn. The flexibility of this effect makes it a powerful tool for controlling the board while filling your graveyard, which synergizes perfectly with discard-focused decks, reanimation strategies, and self-mill shells that benefit from cards in the bin. In Standard and Pioneer, Miasma Demon slots naturally into Grixis or Dimir discard shells where the demon can turn excess cards into tempo advantage while dodging opposing threats. The creature's flying keyword ensures it applies pressure even when the board is contested, giving aggressive black decks another evasive finisher with utility. For Commander players, this card excels in discard-themed commanders like Tinybones or Uro-focused control decks where filling your graveyard is already part of the game plan. The instant-speed nature of the power and toughness reduction means you can ambush opponents during combat math or use it as a combat trick. With legal status across Standard, Pioneer, Modern, Legacy, and Vintage, Miasma Demon provides options for players at every competitive level who want creature removal packaged with card advantage and board presence in one efficient package.