Whenever you become the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {1}. Creature tokens get -1/-0.

Creatures attacking you get -1/-0. At the beginning of each end step, if you were dealt 4 or more damage this turn, exile Boarded Window.

{2}, {T}: All creatures get -1/-0 until end of turn.

Flying Whenever All-Seeing Arbiter enters the battlefield or attacks, draw two cards, then discard a card. Whenever you discard a card, target creature an opponent controls gets -X/-0 until your next turn, where X is the number of different mana values among cards in your graveyard.

Flying Whenever you cycle or discard another card, put a -1/-1 counter on each creature your opponents control. Cycling {2} ({2}, Discard this card: Draw a card.)

Flying, first strike Creatures your opponents control get -1/-0.

Constellation — Whenever Doomwake Giant or another enchantment enters the battlefield under your control, creatures your opponents control get -1/-1 until end of turn.

Neurotraumal Rod — Whenever a creature attacks you, it gets -1/-0 until end of turn. Whenever a creature attacks one of your opponents, it gets +0/+1 until end of turn.

Creatures your opponents control get -1/-0.

Vigilance Unquestionable Wisdom — Other creatures you control get +1/+0 and have vigilance. Hunt for Heresy — {1}, {T}: Tap target creature an opponent controls. Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Other creatures get -1/-1.

When Massacre Wurm enters the battlefield, creatures your opponents control get -2/-2 until end of turn. Whenever a creature an opponent controls dies, that player loses 2 life.

Flying {1}{U}: Target creature an opponent controls attacks this turn if able. {1}{B}, {T}: Attacking creatures get -1/-1 until end of turn.

Flying, hexproof Whenever a Dragon you control attacks, creatures defending player controls get -1/-1 until end of turn.

Creatures your opponents control get -1/-0. {1}{U}, Discard Waker of Waves: Look at the top two cards of your library. Put one of them into your hand and the other into your graveyard.

Watchdog blocks each combat if able. As long as Watchdog is untapped, all creatures attacking you get -1/-0.

Enchant creature card in a graveyard When Animate Dead enters the battlefield, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Animate Dead." Return enchanted creature card to the battlefield under your control and attach Animate Dead to it. When Animate Dead leaves the battlefield, that creature's controller sacrifices it. Enchanted creature gets -1/-0.

Creatures your opponents control get -1/-0.

Enchant creature Enchanted creature gets -2/-2.

Enchant creature Enchanted creature gets -2/-0. When Despondency is put into a graveyard from the battlefield, return Despondency to its owner's hand.

Flash Enchant creature When Disturbing Conversion enters the battlefield, each player mills two cards. Enchanted creature gets -X/-0, where X is the number of cards in its controller's graveyard.

Enchant creature Enchanted creature gets -6/-0. When enchanted creature blocks, destroy it. (The attacking creature remains blocked.)

Creatures with flying get +2/+0. Creatures without flying get -2/-0.

Creature tokens get -1/-1.

Enchant creature Enchanted creature gets -2/-0. {B}: Return Mourning to its owner's hand.

Flash Enchant creature Enchanted creature gets -2/-0 and loses all abilities. (Mutating onto the creature won't give it new abilities. It can gain abilities in other ways.)

All creatures get -1/-1.

Flash Enchant creature Enchanted creature gets -2/-0. It gets -6/-0 instead as long as its controller has seven or more cards in their graveyard.

Flash Enchant creature Enchanted creature gets -X/-0, where X is the number of cards in your graveyard.

Target creature gets -4/-0 until end of turn. If you control a Wizard, draw a card.

Target creature gets -3/-0 until end of turn. Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

({B/P} can be paid with either {B} or 2 life.) Target creature gets -5/-5 until end of turn.

Target creature you don't control gets -4/-0 until end of turn. Overload {2}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

If three or more creatures are attacking, you may pay {U} rather than pay this spell's mana cost. Attacking creatures get -3/-0 until end of turn.

Until end of turn, each creature target player controls loses all abilities and becomes a blue Frog with base power and toughness 1/1.

Target creature gets -4/-0 until end of turn. If you control a Wizard, draw a card.

Flying, deathtouch, lifelink Other creatures you control with flying get +1/+0. Whenever you cast an artifact or enchantment spell, create a 1/1 blue Faerie creature token with flying.

Flying When Archfiend of Sorrows enters the battlefield, creatures your opponents control get -2/-2 until end of turn. Unearth {3}{B}{B} ({3}{B}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Whenever you cast an enchantment spell, you may have target creature get -2/-2 until end of turn.

When Breya, Etherium Shaper enters the battlefield, create two 1/1 blue Thopter artifact creature tokens with flying. {2}, Sacrifice two artifacts: Choose one — • Breya deals 3 damage to target player or planeswalker. • Target creature gets -4/-4 until end of turn. • You gain 5 life.

Target creature gets -4/-0 until end of turn. Scry 2.

Enchant creature Enchanted creature gets -13/-0.

Put a -1/-1 counter on each attacking creature.

All creatures get -2/-2 until end of turn. Exile all creature cards in all graveyards that were put there from the battlefield this turn. If a creature would die this turn, exile it instead.

Vigilance Other creatures you control get +2/+2. Creatures your opponents control get -2/-2.

Creatures you control get +1/+1. Creatures your opponents control get -1/-1. {2}{W}{B}: Exile target card from an opponent's graveyard. If it was a creature card, you create a 1/1 white and black Spirit creature token with flying.

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.) All creatures get -2/-2 until end of turn. If you have the city's blessing, instead only creatures your opponents control get -2/-2 until end of turn.

Level up {1}{B} ({1}{B}: Put a level counter on this. Level up only as a sorcery.) LEVEL 2-3 2/2 {B}, {T}: Target creature gets -2/-2 until end of turn. LEVEL 4+ 4/4 {B}, {T}: Target creature gets -4/-4 until end of turn.

Attacking creatures get -2/-0 until end of turn. Draw a card.

Choose one — • All creatures get -2/-0 until end of turn. • Tap target creature. • Prevent the next 1 damage that would be dealt to any target this turn.

Target creature gets -3/-0 until end of turn. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Companion — Each permanent card in your starting deck has mana value 2 or less. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.) Lifelink Once during each of your turns, you may cast a permanent spell with mana value 2 or less from your graveyard.

All creatures get -2/-0 until end of turn.

All creatures get -X/-0, where X is the number of cards in your hand.

Defender Creatures with flying your opponents control get -1/-0.

Haunt (When this creature dies, exile it haunting target creature.) When Orzhov Pontiff enters the battlefield or the creature it haunts dies, choose one — • Creatures you control get +1/+1 until end of turn. • Creatures you don't control get -1/-1 until end of turn.

Plague Mare can't be blocked by white creatures. When Plague Mare enters the battlefield, creatures your opponents control get -1/-1 until end of turn.

At the beginning of each end step, put a slime counter on each creature you don't control. Creatures you don't control get -1/-1 for each slime counter on them. Whenever a creature you don't control with a slime counter on it dies, create a 1/1 black Slug creature token. {U}{B}, Sacrifice a Slug: Draw a card.

Creatures your opponents control get -2/-0 until end of turn. Draw a card.

Choose two — • Creatures you don't control get -2/-0 until end of turn. • Create a tapped Powerstone token. • Create a tapped 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control." • Scry 1, then draw a card.