Whenever a creature you control deals combat damage to a player, you may draw a card. {1}{U}, {T}: Creatures your opponents control attack this turn if able.

{T}: Add one mana of any color in your commander's color identity. Sacrifice Commander's Sphere: Draw a card.

{3}, {T} or {U}, {T}: Return target creature to its owner's hand unless its controller pays {1}.

{T}: Add {U} or {B}. {U}{B}, {T}, Sacrifice Dimir Cluestone: Draw a card.

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

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

Face-down creature spells you cast cost {1} less to cast.

{T}: Add {C}{C}. {2}, {T}, Sacrifice Hedron Archive: Draw two cards.

Whenever equipped creature deals combat damage to a player, you may draw two cards. If you do, discard a card. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

{T}: Add {C}. {1}, {T}, Sacrifice Mind Stone: Draw a card.

Sky Diamond enters the battlefield tapped. {T}: Add {U}.

{2}, {T}, Sacrifice Wayfarer's Bauble: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Morph {3}{B} (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 Aphetto Exterminator is turned face up, target creature gets -3/-3 until end of turn.

Morph {X}{B}{B} (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 Bane of the Living is turned face up, all creatures get -X/-X until end of turn.

Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token that's a copy of this creature that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.) Whenever Banshee of the Dread Choir deals combat damage to a player, that player discards a card.

Morph {5}{U}{U} (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 Brine Elemental is turned face up, each opponent skips their next untap step.

Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token that's a copy of this creature that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.) Whenever Broodbirth Viper deals combat damage to a player, you may draw a card.

{3}, Sacrifice Burnished Hart: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

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.

Devoid (This card has no color.) Whenever a creature you control deals combat damage to a player, you may draw a card. {3}{C}: Target creature can't be blocked this turn. ({C} represents colorless mana.)

Whenever Dimir Cutpurse deals combat damage to a player, that player discards a card and you draw a card.

Dimir Infiltrator can't be blocked. Transmute {1}{U}{B} ({1}{U}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

{T}: Counter target spell unless its controller pays {1}. Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

{U}, {T}: Target creature attacks target opponent this turn if able. Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Morph {2}{U} (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 Echo Tracer is turned face up, return target creature to its owner's hand.

You may have Evil Twin enter the battlefield as a copy of any creature on the battlefield, except it has "{U}{B}, {T}: Destroy target creature with the same name as this creature."

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.)

Ninjutsu {2}{U}{U} ({2}{U}{U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Higure, the Still Wind deals combat damage to a player, you may search your library for a Ninja card, reveal it, put it into your hand, then shuffle. {2}: Target Ninja creature can't be blocked this turn.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) {2}{U}{B}: Each unblocked creature has base power and toughness 4/1 until end of turn.

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

Face-down creatures get +1/+1. {2}{U}: Turn target face-down creature face up.

As Ixidron enters the battlefield, turn all other nontoken creatures face down. (They're 2/2 creatures.) Ixidron's power and toughness are each equal to the number of face-down creatures on the battlefield.

When Keeper of Keys enters the battlefield, you become the monarch. At the beginning of your upkeep, if you're the monarch, creatures you control can't be blocked this turn.

Menace Whenever Kheru Mind-Eater deals combat damage to a player, that player exiles a card from their hand face down. You may look at cards exiled with Kheru Mind-Eater, and you may play lands and cast spells from among those cards.

Morph {4}{U}{U} (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 Kheru Spellsnatcher is turned face up, counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. You may cast that card without paying its mana cost for as long as it remains exiled.

Morph {2}{U} (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 Master of the Veil is turned face up, you may turn target creature with a morph ability face down.

Trample Whenever Mindleech Mass deals combat damage to a player, you may look at that player's hand. If you do, you may cast a spell from among those cards without paying its mana cost.

{3}{U}{U}: Turn Mischievous Quanar face down. Morph {1}{U}{U} (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 Mischievous Quanar is turned face up, copy target instant or sorcery spell. You may choose new targets for that copy.

Ninjutsu {U} ({U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Mistblade Shinobi deals combat damage to a player, you may return target creature that player controls to its owner's hand.

Flying When Mulldrifter enters the battlefield, draw two cards. Evoke {2}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

Neurok Invisimancer can't be blocked. When Neurok Invisimancer enters the battlefield, target creature can't be blocked this turn.

Ninjutsu {1}{U} ({1}{U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Ninja of the Deep Hours deals combat damage to a player, you may draw a card.

Ninjutsu {3}{B} ({3}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Okiba-Gang Shinobi deals combat damage to a player, that player discards two cards.

Whenever Riptide Entrancer deals combat damage to a player, you may sacrifice it. If you do, gain control of target creature that player controls. (This effect lasts indefinitely.) Morph {U}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) Whenever Shadowmage Infiltrator deals combat damage to a player, you may draw a card.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) When Shriekmaw enters the battlefield, destroy target nonartifact, nonblack creature. Evoke {1}{B} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

Ninjutsu {B} ({B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Skullsnatcher deals combat damage to a player, exile up to two target cards from that player's graveyard.

Slither Blade can't be blocked.

Flying Megamorph {1}{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.) When Stratus Dancer is turned face up, counter target instant or sorcery spell.

Flying Morph {5}{U}{U} (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 Thousand Winds is turned face up, return all other tapped creatures to their owners' hands.

Tormented Soul can't block and can't be blocked.

Ninjutsu {1}{U} ({1}{U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Walker of Secret Ways deals combat damage to a player, look at that player's hand. {1}{U}: Return target Ninja you control to its owner's hand. Activate only during your turn.

Morph {4}{U} (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 Weaver of Lies is turned face up, turn any number of target creatures with morph abilities other than Weaver of Lies face down.

Turn target creature with a morph ability face down. Cycling {U} ({U}, Discard this card: Draw a card.)

Create a token that's a copy of target creature you control. Flashback {5}{U}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Dimir Aqueduct enters the battlefield tapped. When Dimir Aqueduct enters the battlefield, return a land you control to its owner's hand. {T}: Add {U}{B}.

Dimir Guildgate enters the battlefield tapped. {T}: Add {U} or {B}.

Dismal Backwater enters the battlefield tapped. When Dismal Backwater enters the battlefield, you gain 1 life. {T}: Add {U} or {B}.

{T}: Add {C}. {1}, {T}: Put a storage counter on Dreadship Reef. {1}, Remove X storage counters from Dreadship Reef: Add X mana in any combination of {U} and/or {B}.

{T}: Add {C}. {2}, {T}: Exile target creature you control. {4}, {T}, Sacrifice Endless Sands: Return each creature card exiled with Endless Sands to the battlefield under its owner's control.

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

({T}: Add {U}.)

Jwar Isle Refuge enters the battlefield tapped. When Jwar Isle Refuge enters the battlefield, you gain 1 life. {T}: Add {U} or {B}.

{T}: Add {C}. {4}, {T}: Target creature can't be blocked this turn.

Submerged Boneyard enters the battlefield tapped. {T}: Add {U} or {B}.

({T}: Add {B}.)

{T}: Add {C}{C}. Activate only if you control five or more lands.

Create a token that's a copy of target artifact or creature. Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)

Target player loses 1 life, discards a card, then sacrifices a permanent. Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)