At the beginning of your upkeep, you may put a verse counter on Discordant Dirge.

, Sacrifice Discordant Dirge: Look at target opponent's hand and choose up to X cards from it, where X is the number of verse counters on Discordant Dirge. That player discards those cards.

At the beginning of each end step, if it's an opponent's turn, put a +1/+1 counter on Discordant Spirit for each 1 damage dealt to you this turn.

At the beginning of your end step, remove all +1/+1 counters from Discordant Spirit.

Seek three nonland cards, then nonland cards in your hand perpetually gain "This spell costs less to cast."

Surveil 2, then draw a card. (To 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.)

Counter target spell with mana value 4 or greater.

Whenever Diseased Vermin deals combat damage to a player, put an infection counter on it.

At the beginning of your upkeep, Diseased Vermin deals X damage to target opponent previously dealt damage by it, where X is the number of infection counters on it.

Put target artifact or enchantment on top of its owner's library.

Destroy target artifact or enchantment.

Target creature gets -2/-2 until end of turn.

When Disinformation Campaign enters, you draw a card and each opponent discards a card.

Whenever you surveil, return Disinformation Campaign to its owner's hand.

This land enters tapped.

When this land enters, you gain 1 life.

: Add or .

Destroy target artifact. If that artifact had counters on it, put that many +1/+1 counters or charge counters on an artifact you control.

For each opponent, destroy up to one target artifact or enchantment that player controls.

Cycling (, Discard this card: Draw a card.)

When you cycle Dismantling Wave, destroy all artifacts and enchantments.

Counter target spell.

Draw a card.

, , Discard a card: Draw a card.

, , Sacrifice Dismissive Pyromancer: It deals 4 damage to target creature.

Exile X target creatures, then investigate X times. Return the exiled cards to the battlefield tapped under their owners' control at the beginning of the next end step. (To investigate, create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

For each opponent, choose up to one target artifact or enchantment that player controls. For each permanent chosen this way, its controller may exile it. Then if one or more of the chosen permanents are still on the battlefield, you search your library for up to that many land cards, put them onto the battlefield tapped, then shuffle.

Tap target creature.

Metalcraft — If you control three or more artifacts, exile that creature.

Counter target instant spell.

Target player sacrifices an attacking creature of their choice.

Metalcraft — That player sacrifices two attacking creatures of their choice instead if you control three or more artifacts.

Counter target spell if its mana value is less than or equal to the highest mana value among permanents you control.

Return target nonland permanent to its owner's hand.

Exile up to two target creatures you control, then return those cards to the battlefield under their owner's control.

Return all nonland permanents with mana value X or less to their owners' hands.

Avoidance — Whenever you cast a noncreature spell, exile up to one target nonland permanent you control, then return that card to the battlefield under its owner's control.

This spell can't be copied.

Copy any number of target instant and/or sorcery spells. You may choose new targets for the copies.

Choose an artifact card name. Search target opponent's graveyard, hand, and library for any number of cards with the chosen name and exile them. Then that player shuffles.

Goad all creatures you don't control. (Until your next turn, those creatures attack each combat if able and attack a player other than you if able.)

You may exile a blue card with mana value X from your hand rather than pay this spell's mana cost.

Counter target spell if its mana value is X.

As an additional cost to cast this spell, tap an untapped artifact you control or pay .

Counter target spell.

: Counter target spell unless its controller pays .

Whenever Disruptor Wanderglyph attacks, exile target card from an opponent's graveyard.

When Dissection Tools enters, manifest dread, then attach Dissection Tools to that creature.

Equipped creature gets +2/+2 and has deathtouch and lifelink.

Equip—Sacrifice a creature.

Destroy target artifact.

Cycling (, Discard this card: Draw a card.)

Whenever a permanent deals damage to you, return it to its owner's hand.

Counter target activated or triggered ability from a noncreature source. (Then exile this card. You may cast the creature later from exile.)

Search your library for a card, exile it, then shuffle. Any opponent may have you put that card into your hand. If no player does, you draw three cards.

Emerge (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)

When you cast this spell, target opponent reveals their hand. You choose from it a nonland card with mana value 3 or less and a card with mana value 4 or greater. That player discards those cards.

Corrupted — This spell costs less to cast if an opponent has three or more poison counters.

Draw two cards.

Return X target nonland permanents to their owners' hands.

Freerunning (You may cast this spell for its freerunning cost if you dealt combat damage to a player this turn with an Assassin or commander.)

Create three 1/1 white Human Rogue creature tokens.

Target player reveals their hand. You choose a nonland card from it. That player discards that card.

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)

Return target creature card from your graveyard to your hand.

Flash

Enchant creature

When Disturbing Conversion enters, each player mills two cards.

Enchanted creature gets -X/-0, where X is the number of cards in its controller's graveyard.

Return target creature card from a graveyard to its owner's hand.

Conspire (As you cast this spell, you may tap two untapped creatures you control that share a color with it. When you do, copy it and you may choose a new target for the copy.)

Target creature you control gets +0/+3 and gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)

Exploit (When this creature enters, you may sacrifice a creature.)

When Diver Skaab exploits a creature, target creature's owner puts it on their choice of the top or bottom of their library.

Undaunted (This spell costs less to cast for each opponent.)

Exile two target creatures. For each of those creatures, its controller reveals cards from the top of their library until they reveal a creature card, puts that card onto the battlefield, then shuffles the rest into their library.

Tap two untapped creatures you control: Tap target creature.

Target player reveals their hand. You choose an artifact or creature card from it. That player discards that card.