The power of 1

Devoid (This card has no color.)

Counter target spell unless its controller pays {1}. You create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add {C}." ({C} represents colorless mana.)

{1}, {T}: Acorn Catapult deals 1 damage to any target. That permanent's controller or that player creates a 1/1 green Squirrel creature token.

Defender

When Akroan Horse enters the battlefield, an opponent gains control of it.

At the beginning of your upkeep, each opponent creates a 1/1 white Soldier creature token.

As Aquamorph Entity enters the battlefield or is turned face up, it becomes your choice of 5/1 or 1/5.

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.)

Flying (This creature can't be blocked except by creatures with flying or reach.)

When Aspiring Aeronaut enters the battlefield, create a 1/1 colorless Thopter artifact creature token with flying.

When Aviation Pioneer enters the battlefield, create a 1/1 colorless Thopter artifact creature token with flying.

Whenever Balshan Beguiler deals combat damage to a player, that player reveals the top two cards of their library. You choose one of those cards and put it into their graveyard.

Devoid (This card has no color.)

Ingest (Whenever this creature deals combat damage to a player, that player exiles the top card of their library.)

Benthic Infiltrator can't be blocked.

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.

Equipped creature gets +1/+0.

Whenever equipped creature attacks, create a 1/1 white Kor Ally creature token that's tapped and attacking.

Equip {1}

Whenever Cephalid Constable deals combat damage to a player, return up to that many target permanents that player controls to their owner's hand.

Defender (This creature can't attack.)

When Coral Barrier enters the battlefield, create a 1/1 blue Squid creature token with islandwalk. (It can't be blocked as long as defending player controls an Island.)

Whenever Coral Fighters attacks and isn't blocked, look at the top card of defending player's library. You may put that card on the bottom of that player's library.

Whenever Crosstown Courier deals combat damage to a player, that player mills that many cards.

{2}, {T}: Reveal the top card of your library. If it's a creature card, create a 1/1 green Saproling creature token. If it's a land card, put that card onto the battlefield under your control. If it's a noncreature, nonland card, you gain 2 life.

Flying

Whenever the fourth spell of a turn is cast, flip Erayo, Soratami Ascendant.

{T}: Add {C}.

{5}, {T}, Sacrifice Foundry of the Consuls: Create two 1/1 colorless Thopter artifact creature tokens with flying.

Counter target creature spell. Create a 1/1 blue Spirit creature token with flying.

{T}: Add three mana of any one color.

Flying

Whenever Guildpact Informant deals combat damage to a player or planeswalker, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Whenever Ichorclaw Myr becomes blocked, it gets +2/+2 until end of turn.

({T}: Add {U}.)

Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)

Whenever Marchesa's Infiltrator deals combat damage to a player, draw a card.

Flying

{1}, Return a land you control to its owner's hand: Create a 1/1 blue Illusion creature token with flying.

When a spell or ability an opponent controls causes you to discard Metrognome, create four 1/1 colorless Gnome artifact creature tokens.

{4}, {T}: Create a 1/1 colorless Gnome artifact creature token.

Devoid (This card has no color.)

Flying

Ingest (Whenever this creature deals combat damage to a player, that player exiles the top card of their library.)

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.

{6}, {T}, Sacrifice Myr Incubator: Search your library for any number of artifact cards, exile them, then create that many 1/1 colorless Myr artifact creature tokens. Then shuffle.

{3}, {T}: Create a token that's a copy of Myr Propagator.

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

{T}: Create a 1/1 colorless Myr artifact creature token.

{T}, Tap five untapped Myr you control: Search your library for a Myr creature card, put it onto the battlefield, then shuffle.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

When Necropede dies, you may put a -1/-1 counter on target creature.

Orochi Hatchery enters the battlefield with X charge counters on it.

{5}, {T}: Create a 1/1 green Snake creature token for each charge counter on Orochi Hatchery.

Pentavus enters the battlefield with five +1/+1 counters on it.

{1}, Remove a +1/+1 counter from Pentavus: Create a 1/1 colorless Pentavite artifact creature token with flying.

{1}, Sacrifice a Pentavite: Put a +1/+1 counter on Pentavus.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

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}.

{T}: Add {C}. You gain 1 life.

Whenever Raven Guild Master deals combat damage to a player, that player exiles the top ten cards of their library.

Morph {2}{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.)

{3}: Untap Retrofitter Foundry.

{2}, {T}: Create a 1/1 colorless Servo artifact creature token.

{1}, {T}, Sacrifice a Servo: Create a 1/1 colorless Thopter artifact creature token with flying.

{T}, Sacrifice a Thopter: Create a 4/4 colorless Construct artifact creature token.

Whenever a creature attacks you or a planeswalker you control, that creature's controller mills two cards.

Whenever Riptide Pilferer deals combat damage to a player, that player discards a card.

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}: Rootwater Thief gains flying until end of turn.

Whenever Rootwater Thief deals combat damage to a player, you may pay {2}. If you do, search that player's library for a card and exile it, then the player shuffles.

Devoid (This card has no color.)

Ingest (Whenever this creature deals combat damage to a player, that player exiles the top card of their library.)

When Salvage Drone dies, you may draw a card. If you do, discard a card.

As Sarpadian Empires, Vol. VII enters the battlefield, choose white Citizen, blue Camarid, black Thrull, red Goblin, or green Saproling.

{3}, {T}: Create a 1/1 creature token of the chosen color and type.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Whenever Scalpelexis deals combat damage to a player, that player exiles the top four cards of their library. If two or more of those cards have the same name, repeat this process.

Flying

Metalcraft — Whenever Screeching Silcaw deals combat damage to a player, if you control three or more artifacts, that player mills four cards.

{4}, {T}: Create a 1/1 colorless Snake artifact creature token. It has "Whenever this creature deals damage to a player, that player gets a poison counter." (A player with ten or more poison counters loses the game.)

Flying

Whenever Shriekgeist deals combat damage to a player, that player mills two cards.

{T}: Add {U}.

Flying

Whenever Skyship Plunderer deals combat damage to a player, for each kind of counter on target permanent or player, give that permanent or player another counter of that kind.

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

Whenever you cast a blue spell or an Island enters the battlefield under your control, you gain 1 life.

Flying

Tetravus enters the battlefield with three +1/+1 counters on it.

At the beginning of your upkeep, you may remove any number of +1/+1 counters from Tetravus. If you do, create that many 1/1 colorless Tetravite artifact creature tokens. They each have flying and "This creature can't be enchanted."

At the beginning of your upkeep, you may exile any number of tokens created with Tetravus. If you do, put that many +1/+1 counters on Tetravus.

Creatures you control with power or toughness 1 or less can't be blocked.

[+1]: Create a 1/1 colorless Thopter artifact creature token with flying.

[0]: Draw a card. If you control three or more artifacts, draw two cards instead.

[−9]: You get an emblem with "At the beginning of your end step, search your library for a permanent card, put it onto the battlefield, then shuffle."

Shadow (This creature can block or be blocked by only creatures with shadow.)

Whenever Thalakos Deceiver attacks and isn't blocked, you may sacrifice it. If you do, gain control of target creature. (This effect lasts indefinitely.)

Flying

At the beginning of your upkeep, if you control no Thopters other than Thopter Assembly, return Thopter Assembly to its owner's hand and create five 1/1 colorless Thopter artifact creature tokens with flying.

At the beginning of your upkeep, if you control an artifact, create a 1/1 colorless Thopter artifact creature token with flying.

Whenever one or more artifact creatures you control deal combat damage to a player, draw a card.

Flying

Thopter Squadron enters the battlefield with three +1/+1 counters on it.

{1}, Remove a +1/+1 counter from Thopter Squadron: Create a 1/1 colorless Thopter artifact creature token with flying. Activate only as a sorcery.

{1}, Sacrifice another Thopter: Put a +1/+1 counter on Thopter Squadron. Activate only as a sorcery.

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

{1}, {T}: Create a 1/1 white Soldier creature token. Create five of those tokens instead if you control artifacts named Crown of Empires and Scepter of Empires.

Flying

Whenever Thrummingbird deals combat damage to a player, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flying

Triskelavus enters the battlefield with three +1/+1 counters on it.

{1}, Remove a +1/+1 counter from Triskelavus: Create a 1/1 colorless Triskelavite artifact creature token with flying. It has "Sacrifice this creature: This creature deals 1 damage to any target."

{B}: Vector Asp gains infect until end of turn. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Flash

Flying

When Vendilion Clique enters the battlefield, look at target player's hand. You may choose a nonland card from it. If you do, that player reveals the chosen card, puts it on the bottom of their library, then draws a card.

Flying

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

{3}{U}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

{4}, {T}: Create a 1/1 colorless Thopter artifact creature token with flying.

Worn Powerstone enters the battlefield tapped.

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