Demon's Den

Creature — Human Wizard

Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.

Creature — Elf Wizard

Opus — Whenever you cast an instant or sorcery spell, draw a card. Then discard a card unless five or more mana was spent to cast that spell.

Instant

Create a 3/3 blue and red Elemental creature token with flying. 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.)

Creature — Dog

Sacrifice a Food: Put a +1/+1 counter on this creature. It gains vigilance until end of turn. Activate only as a sorcery.

Enchantment

When this enchantment enters, create a 1/1 white Spirit creature token with flying. Morbid — At the beginning of your end step, if a creature died this turn, populate. (Create a token that's a copy of a creature token you control.)

Sorcery

Destroy up to one target artifact, enchantment, or creature with flying. Create a Mutagen token. (It's an artifact with "{1}, {T}, Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery.")

Creature — Mutant Scout

Start your engines! (If you have no speed, it starts at 1. It increases once on each of your turns when an opponent loses life. Max speed is 4.) {2}: This creature gets +1/+1 until end of turn. Max speed — {3}, Exile this card from your graveyard: Draw a card.

Land

This land enters tapped. When this land enters, you gain 1 life. {T}: Add {G} or {U}.

Sorcery

This spell has flash as long as you control a permanent with flash. As an additional cost to cast this spell, sacrifice a creature. Destroy target creature.

Artifact Creature — Phyrexian Myr

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) {T}, Pay 2 life: Add one mana of any color.

Artifact Creature — Myr

When this creature enters, scry 2. Then each opponent may scry 1. (To scry X, a player looks at the top X cards of their library, then puts any number of them on the bottom and the rest on top in any order.)

Artifact Creature — Myr

When this creature enters, you may search your library for a Myr card, reveal it, put it into your hand, then shuffle.

Artifact Creature — Myr

Sacrifice this creature: Put a +1/+1 counter on target creature.

Artifact Creature — Phyrexian Myr

When this creature dies, create a 1/1 colorless Phyrexian Myr artifact creature token.

Land

This land enters tapped. {T}: Add {C}. {2}, {T}, Sacrifice this land: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

Creature — Human Artificer

Whenever you cast an artifact spell, you may pay {1}. If you do, create a 1/1 colorless Myr artifact creature token.

Creature — Human Wizard

When this creature enters, create a 0/1 black Wizard creature token with "Whenever you cast a noncreature spell, this token deals 1 damage to each opponent."

Instant

Draw two cards. Landfall — If you had a land enter the battlefield under your control this turn, draw three cards instead.

Creature — Illusion Villain

Flying, vigilance Whenever this creature attacks, mill a card. (Put the top card of your library into your graveyard.)

Legendary Creature — Human Villain

When Mysterio enters, create a 3/3 blue Illusion Villain creature token for each nontoken Villain you control. Exile those tokens when Mysterio leaves the battlefield.

Creature — Egg

Whenever this creature mutates, put a +1/+1 counter on it.

Artifact — Vehicle

Whenever this Vehicle enters or attacks, exile up to one other target creature until this Vehicle leaves the battlefield. If a creature is put into exile this way, return each other card exiled with this Vehicle to the battlefield under its owner's control. Crew 2

Creature — Faerie

Flying Each creature you control that has an Adventure enters with an additional +1/+1 counter on it. (It doesn't need to have gone on the adventure first.)

Instant

Choose three. You may choose the same mode more than once. • Counter target spell unless its controller pays {3}. • Return target creature to its owner's hand. • Draw a card.

Land

This land enters tapped. {T}: Add {U}, {R}, or {W}.

Sorcery

Return target instant or sorcery card from your graveyard to your hand. Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Creature — Fish

Whenever you draw your second card each turn, this creature gains flying until end of turn.

Enchantment — Aura

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.)

Instant

Search your library for an instant card or a card with flash, reveal it, put it into your hand, then shuffle. Flashback {5}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Enchantment

You may cast this spell as though it had flash if you pay {2} more to cast it. When this enchantment enters, exile target artifact or creature an opponent controls until this enchantment leaves the battlefield.

Enchantment

Whenever you cast a noncreature spell, put a lore counter on this enchantment. {2}{W}: Put a lore counter on this enchantment. {W}: Until end of turn, this enchantment becomes a Monk Avatar creature in addition to its other types and gains "This creature's power and toughness are each equal to the number of lore counters on it."

Sorcery

If {U}{B} was spent to cast this spell, search your library for a card, put that card into your graveyard, then shuffle. Return up to two permanent cards from your graveyard to your hand.

Sorcery

Create a token that's a copy of target permanent. If {R}{G} was spent to cast this spell, instead create a token that's a copy of that permanent, except the token has "When this token enters, if it's a creature, it fights up to one target creature you don't control."

Creature — Elf Warrior

Whenever a token you control leaves the battlefield, each opponent loses 1 life and you gain 1 life.

Creature — Kraken

Whenever you draw a card, you may pay {1}. If you do, put a +1/+1 counter on this creature and create a 1/1 blue Tentacle creature token.

Legendary Creature — Elf Scout

Flying Domain — Whenever Nael deals combat damage to a player, look at the top X cards of your library, where X is the number of basic land types among lands you control. Put up to one of them on top of your library and the rest on the bottom in a random order. Then if there are five basic land types among lands you control, draw a card.

Enchantment — Aura

Enchant creature or planeswalker Enchanted permanent can't attack or block, and its activated abilities can't be activated.

Sorcery

As an additional cost to cast this spell, sacrifice an artifact or creature with mana value X. Nahiri's Sacrifice deals X damage divided as you choose among any number of target creatures.

Legendary Creature — Efreet Wizard

You may cast sorcery spells as though they had flash. Whenever Najal attacks, you may pay {2}. If you do, when you next cast an instant or sorcery spell this turn, copy it. You may choose new targets for the copy.

Creature — Fish Citizen

When this creature enters, you lose 1 life and create a Treasure token. Whenever this creature attacks, you may sacrifice another creature or artifact. If you do, 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.)

Kindred Instant — Shapeshifter

Changeling (This card is every creature type.) Target creature gets +3/-3 and loses all creature types until end of turn.

Artifact Creature — Robot

Whenever this creature becomes tapped, untap another target permanent. This ability triggers only once each turn.

Creature — Zombie Insect

Sacrifice a creature: This creature gets +2/+2 until end of turn.

Creature — Insect Shade

{B}: This creature gets +1/+1 until end of turn.

Creature — Insect Druid Mutant

Morph {1}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, destroy target artifact or enchantment.

Legendary Creature — Human Advisor

Whenever Naomi enters or attacks, if you control an artifact and an enchantment, create a 2/2 white Samurai creature token with vigilance.

Enchantment — Aura

Enchant creature At the beginning of each upkeep, if enchanted creature is untapped, tap it.

Artifact Creature — Snake

{G}: This creature gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Creature — Elf Warrior

Deathtouch Revolt — This creature enters with a +1/+1 counter on it if a permanent left the battlefield under your control this turn.

Instant

Narset's Rebuke deals 5 damage to target creature. Add {U}{R}{W}. If that creature would die this turn, exile it instead.