Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) Blighted Agent can't be blocked.

Carrion Feeder can't block. Sacrifice a creature: Put a +1/+1 counter on Carrion Feeder.

{1}, {T}: Add {U}{B}.

Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

Destroy six target creatures.

Whenever a nontoken creature you control dies, Midnight Reaper deals 1 damage to you and you draw a card.

All creatures get -1/-1 until end of turn for each Swamp you control.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) {T}: Add {C}.

Skulk (This creature can't be blocked by creatures with greater power.) Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Counter target spell.

Multikicker {2} (You may pay an additional {2} any number of times as you cast this spell.) Everflowing Chalice enters the battlefield with a charge counter on it for each time it was kicked. {T}: Add {C} for each charge counter on Everflowing Chalice.

Hexproof (This creature can't be the target of spells or abilities your opponents control.) Invisible Stalker can't be blocked.

Kagemaro, First to Suffer's power and toughness are each equal to the number of cards in your hand. {B}, Sacrifice Kagemaro: All creatures get -X/-X until end of turn, where X is the number of cards in your hand.

At the beginning of each player's draw step, that player draws an additional card.

Exile target creature. Its controller manifests the top card of their library. (That player puts the top card of their library onto the battlefield face down as a 2/2 creature. If it's a creature card, it can be turned face up any time for its mana cost.)

Partner with Pir, Imaginative Rascal (When this creature enters the battlefield, target player may put Pir into their hand from their library, then shuffle.) Whenever you draw a card, put a +1/+1 counter on Toothy, Imaginary Friend. When Toothy leaves the battlefield, draw a card for each +1/+1 counter on it.

{T}: Put a +1/+1 counter on each artifact creature you control.

As an additional cost to cast this spell, pay X life. All creatures get -X/-X until end of turn.

Flying, deathtouch When Baleful Strix enters the battlefield, draw a card.

Whenever a creature dies, put a charge counter on Black Market. At the beginning of your precombat main phase, add {B} for each charge counter on Black Market.

{X}: Crypt Rats deals X damage to each creature and each player. Spend only black mana on X.

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.

+1: Look at the top two cards of your library. Put one of them into your graveyard. −3: Return another target nonland permanent to its owner's hand. −8: Each player shuffles their hand and graveyard into their library. You draw seven cards.

Heroic — Whenever you cast a spell that targets Sage of Hours, put a +1/+1 counter on it. Remove all +1/+1 counters from Sage of Hours: For each five counters removed this way, take an extra turn after this one.

Defender Whenever Shield Sphere blocks, put a -0/-1 counter on it.

{T}: Add {C}{C}.

Sacrifice an artifact: Put a +1/+1 counter on Arcbound Ravager. Modular 1 (This creature enters the battlefield with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Flash Whenever a creature you control dies, each opponent sacrifices a creature.

Hangarback Walker enters the battlefield with X +1/+1 counters on it. When Hangarback Walker dies, create a 1/1 colorless Thopter artifact creature token with flying for each +1/+1 counter on Hangarback Walker. {1}, {T}: Put a +1/+1 counter on Hangarback Walker.

Whenever Arcbound Slith deals combat damage to a player, put a +1/+1 counter on it. Modular 1 (This creature enters the battlefield with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Flying Whenever you cast a historic spell, scry 1. (Artifacts, legendaries, and Sagas are historic. To scry 1, look at the top card of your library, then you may put that card on the bottom of your library.)

Flying When Cavern Harpy enters the battlefield, return a blue or black creature you control to its owner's hand. Pay 1 life: Return Cavern Harpy to its owner's hand.

Artifact spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting an artifact spell pays for {1} or one mana of that creature's color.)

Whenever an opponent shuffles their library, you may put a +1/+1 counter on Cosi's Trickster.

{T}, Mill a card: Add {C}. (To mill a card, put the top card of your library into your graveyard.)

Whenever an artifact is put into a graveyard from the battlefield, you may have target opponent lose 1 life.

Level up {1}{U} ({1}{U}: Put a level counter on this. Level up only as a sorcery.) LEVEL 1-2 0/1 {T}: Draw a card, then discard a card. LEVEL 3+ 0/1 {T}: Draw a card.

Escape Artist can't be blocked. {U}, Discard a card: Return Escape Artist to its owner's hand.

Artifact spells you cast cost {1} less to cast.

Gudul Lurker can't be blocked. Megamorph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

Flying Jace's Phantasm gets +4/+4 as long as an opponent has ten or more cards in their graveyard.

When Kjeldoran Dead enters the battlefield, sacrifice a creature. {B}: Regenerate Kjeldoran Dead.

Shadow (This creature can block or be blocked by only creatures with shadow.) Whenever Looter il-Kor deals damage to an opponent, draw a card, then discard a card.

{T}: Draw a card, then discard a card.

Destroy two target nonblack creatures. You lose 5 life.

Whenever you cast an artifact spell, you may draw a card. If you do, discard a card.

{1}, Sacrifice an artifact: Put a +1/+1 counter on Syndicate Trafficker. It gains indestructible until end of turn.

At the beginning of your end step, untap target artifact.