At the beginning of combat on your turn, if you control a legendary Assassin, this creature gets +1/+0 until end of turn and can't be blocked this turn.

Menace (This creature can't be blocked except by two or more creatures.) Tunnel Snakes Rule! — Whenever Butch DeLoria attacks, it gets +1/+1 until end of turn for each other Rogue and/or Snake you control. {1}{B}: Put a menace counter on another target creature. It becomes a Rogue in addition to its other types.

This creature can't be blocked. At the beginning of combat on your turn, you may have this creature become a copy of another target creature until end of turn, except it's 1/4 and has "This creature can't be blocked."

As this enchantment enters, choose a creature type. Creatures of the chosen type have fear. (They can't be blocked except by artifact creatures and/or black creatures.)

{T}: Add one mana of any color in your commander's color identity.

Whenever Bill Ferny becomes blocked, choose one — • Create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.") • Target opponent gains control of target Horse you control. If they do, remove Bill Ferny from combat and create three Treasure tokens.

{T}: Add {U} or {B}. {U}{B}, {T}, Sacrifice this artifact: Draw a card.

{T}: Add {U} or {B}. {U}{B}: This artifact becomes a 2/2 blue and black Horror artifact creature until end of turn and can't be blocked this turn.

{T}: Add {U} or {B}. {U/B}{U/B}{U/B}{U/B}, {T}, Sacrifice this artifact: Draw two cards.

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

Freerunning {U}{B} (You may cast this spell for its freerunning cost if you dealt combat damage to a player this turn with an Assassin or commander.) Menace (This creature can't be blocked except by two or more creatures.) Other Assassins you control get +1/+1.

Each noncreature artifact is an artifact creature with power and toughness each equal to its mana value. (Equipment that's a creature can't equip a creature.)

When this creature enters, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") Whenever you sacrifice a Clue, target opponent gets two poison counters. (A player with ten or more poison counters loses the game.)

You may look at an additional two cards each time you surveil. Exile this enchantment: Shuffle your graveyard into your library.

Partner with Evie Frye (When this creature enters, target player may put Evie into their hand from their library, then shuffle.) Whenever one or more Assassins you control deal combat damage to a player, exile up to one target Assassin card or card with freerunning from your graveyard. If you do, copy it. You may cast the copy.

Flying, vigilance Whenever you surveil, put a +1/+1 counter on Mirko. At the beginning of your end step, you may return target creature card with power less than Mirko's from your graveyard to the battlefield with a finality counter on it. (If it would die, exile it instead.)

When Yggdrasil enters, exile all creature cards from your graveyard. {T}: Exile the top three cards of your library. {4}, {T}: Put a creature card exiled with Yggdrasil onto the battlefield under your control. It gains haste until end of turn. Activate only as a sorcery.

{T}: Add {C}. {1}, {T}: Add one mana of any color. {3}, {T}, Exile Abstergo Entertainment: Return up to one target historic card from your graveyard to your hand, then exile all graveyards. (Artifacts, legendaries, and Sagas are historic.)

This land enters tapped unless you control an Island. {T}: Add {U}. {U}, {T}: The next spell you cast this turn has improvise. (Your artifacts can help cast that spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)

{T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast an Assassin spell or a spell that has freerunning, or to activate an ability of an Assassin source.

This land enters tapped unless you control a Swamp. {T}: Add {B}. {1}{B}{B}, {T}: Draw a card, then you lose life equal to the number of cards in your hand.

This land enters tapped unless you control an Island. {T}: Add {U}. {2}{U}{U}, {T}: Scry 2.

{T}: Add one mana of any color in your commander's color identity.

({T}: Add {U} or {B}.) This land enters tapped.

This land enters tapped unless you control two or fewer other lands. {T}: Add {U} or {B}.

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

This land enters tapped unless you control an Island or a Swamp. {T}: Add {U} or {B}.

{T}: Add {C}. {3}, {T}, Discard a card: Look at the top X cards of your library, where X is the number of artifacts you control. Put one of those cards into your hand and the rest on the bottom of your library in a random order.

When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) {T}: Add {C}. {1}, {T}: Add one mana of any color.

({T}: Add {U} or {B}.) This land enters tapped.

({T}: Add {U}.)

This land enters tapped unless you have two or more opponents. {T}: Add {U} or {B}.

{T}: Add {C}. {T}, Sacrifice a creature: Add {B}{B}.

{T}: Add {U}.

This land enters tapped unless you control two or more other lands. {T}: Add {U} or {B}.

({T}: Add {U} or {B}.) This land enters tapped unless you control two or more basic lands.

{T}: Add {C}. {U/B}, {T}: Add {U}{U}, {U}{B}, or {B}{B}.

({T}: Add {B}.)

{T}: Add {C}. {T}: Add {U} or {B}. Activate only if you control a Swamp.

Choose one or both — • Return target creature to its owner's hand. • Target player searches their library and/or graveyard for a card named Ezio, Blade of Vengeance, reveals it, and puts it into their hand. If they search their library this way, they shuffle.

Freerunning {1}{B} (You may cast this spell for its freerunning cost if you dealt combat damage to a player this turn with an Assassin or commander.) Destroy target creature. If another creature died this turn, draw a card.

Return each nonland permanent that's not historic to its owner's hand. (Artifacts, legendaries, and Sagas are historic.)

As an additional cost to cast this spell, sacrifice a creature or enchantment. Exile target creature.

Destroy target nonartifact creature.

This spell can't be countered. (This includes by the ward ability.) Tap up to two target creatures and put a stun counter on each of them. Investigate. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Counter target spell unless its controller pays {1} for each card in your graveyard.

{T}: Destroy target tapped creature.

When this enchantment enters, create a 1/1 white Human Soldier creature token. Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.

When this creature dies, each opponent loses 2 life and you gain 2 life.

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

Flying Whenever this creature or another creature dies, target player loses 1 life and you gain 1 life.

Flying Whenever you create or sacrifice a token, each opponent loses 1 life.

When this enchantment enters, create a 1/1 red Mercenary creature token with "{T}: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery." Whenever an outlaw you control dies, each opponent loses 1 life and you gain 1 life. (Assassins, Mercenaries, Pirates, Rogues, and Warlocks are outlaws.)

When this creature enters, 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.) Whenever an opponent draws their second card each turn, you may return this card from your graveyard to your hand.

Create a 2/2 white and blue Detective creature token. If a creature died this turn, you gain 2 life, surveil 2, then investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")

Whenever one or more nontoken creatures you control deal combat damage to a player, create a 1/1 black Assassin creature token with menace. (It can't be blocked except by two or more creatures.)

As an additional cost to cast this spell, sacrifice a creature. Draw two cards.

Whenever you cast a historic spell, draw a card. Basim Ibn Ishaq can't be blocked this turn. This ability triggers only once each turn. (Artifacts, legendaries, and Sagas are historic.) Whenever Basim Ibn Ishaq deals combat damage to a player, put a +1/+1 counter on it.

Draw three cards, then put two cards from your hand on top of your library in any order.

As an additional cost to cast this spell, sacrifice a creature. Draw two cards.

Enchant creature Enchanted creature gets +1/+1 and has "Whenever this creature deals combat damage to a player, investigate." (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")

Menace Desmond Miles gets +1/+0 for each other Assassin you control and each Assassin card in your graveyard. Whenever Desmond Miles deals combat damage to a player, surveil X, where X is the amount of damage it dealt to that player.

Partner with Jacob Frye (When this creature enters, target player may put Jacob into their hand from their library, then shuffle.) {1}, {T}: Draw a card, then discard a card. When you discard a creature card this way, target creature you control can't be blocked this turn.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) Whenever an Assassin you control deals combat damage to a player, draw a card.

Whenever one or more nontoken creatures you control die, investigate. This ability triggers only once each turn. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")

Freerunning {1}{B} (You may cast this spell for its freerunning cost if you dealt combat damage to a player this turn with an Assassin or commander.) When this creature enters, you draw a card and you lose 1 life.

Whenever one or more other creatures die, draw a card. This ability triggers only once each turn.

Enchant creature When this Aura enters, draw two cards. Enchanted creature has "You have no maximum hand size" and "Whenever this creature attacks, if you have ten or more cards in hand, it gets +10/+10 until end of turn."

Draw two cards, then sacrifice a permanent.

Whenever Piper Wright deals combat damage to a player, investigate that many times. (To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") Whenever you sacrifice a Clue, put a +1/+1 counter on target creature you control.

Sacrifice any number of permanents you control, then draw that many cards. Plot {1}{B}{B} (You may pay {1}{B}{B} and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Other creatures you control are Assassins in addition to their other types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield. Face-down creatures you control have menace. Whenever a permanent you control is turned face up, you draw a card and you lose 1 life.

When Staff of Eden enters, put target legendary permanent card not named Staff of Eden, Vault's Key from a graveyard onto the battlefield under your control. {T}: Draw a card for each permanent you control but don't own.