Flying

When Aethersphere Harvester enters the battlefield, you get {E}{E} (two energy counters).

Pay {E}: Aethersphere Harvester gains lifelink until end of turn.

Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

Whenever one or more +1/+1 counters are put on a permanent you control, you may pay {1}. If you do, create a 1/1 colorless Servo artifact creature token.

{3}, {T}: Choose a counter on target permanent or player. Give that permanent or player another counter of that kind.

{3}, {T}: Tap target creature you control and target creature of an opponent's choice they control. Those creatures fight each other. (Each deals damage equal to its power to the other.)

Equipped creature gets +1/+1 for each land you control.

Equip legendary creature {3}

Equip {7}

At the beginning of each player's precombat main phase, if Blinkmoth Urn is untapped, that player adds {C} for each artifact they control.

At the beginning of each player's upkeep, that player returns a permanent they control to its owner's hand unless they pay 2 life.

Creature tokens you control have haste.

At the beginning of combat on your turn, create a 2/1 blue Phyrexian Myr artifact creature token. Then you may choose a token you control. If you do, each other token you control becomes a copy of that token.

Tap two untapped artifacts you control: Untap target artifact.

{T}: Add one mana of any color.

{T}: Put a charge counter on Coalition Relic.

At the beginning of your precombat main phase, remove all charge counters from Coalition Relic. Add one mana of any color for each charge counter removed this way.

Defender, indestructible

{10}: Monstrosity 10. (If this creature isn't monstrous, put ten +1/+1 counters on it and it becomes monstrous.)

As long as Colossus of Akros is monstrous, it has trample and can attack as though it didn't have defender.

{T}: You get {E} (an energy counter).

{T}, Pay {E}{E}{E}: Consulate Turret deals 2 damage to target player or planeswalker.

Coral Atoll enters the battlefield tapped.

When Coral Atoll enters the battlefield, sacrifice it unless you return an untapped Island you control to its owner's hand.

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

Indestructible

Whenever Creepy Doll deals combat damage to a creature, flip a coin. If you win the flip, destroy that creature.

{3}, {T}: Tap target creature. Gain control of that creature instead if you control artifacts named Scepter of Empires and Throne of Empires.

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

You may have Dack's Duplicate enter the battlefield as a copy of any creature on the battlefield, except it has haste and dethrone. (Whenever it attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)

{T}: Add {C}{C}. Spend this mana only to cast artifact spells or activate abilities of artifacts.

Equipped creatures you control have flying and haste.

+2: Discard up to two cards, then draw that many cards.

-2: Sacrifice an artifact. If you do, return target artifact card from your graveyard to the battlefield.

-10: You get an emblem with "Whenever an artifact is put into your graveyard from the battlefield, return that card to the battlefield at the beginning of the next end step."

Daretti, Scrap Savant can be your commander.

Indestructible

Darksteel Juggernaut's power and toughness are each equal to the number of artifacts you control.

Darksteel Juggernaut attacks each combat if able.

Flash (You may cast this spell any time you could cast an instant.)

Vigilance

Indestructible (Damage and effects that say "destroy" don't destroy this creature. If its toughness is 0 or less, it's still put into its owner's graveyard.)

Whenever a creature enters the battlefield under your control, you get {E} (an energy counter).

{4}, {T}: Return target creature you control to its owner's hand.

Dormant Volcano enters the battlefield tapped.

When Dormant Volcano enters the battlefield, sacrifice it unless you return an untapped Mountain you control to its owner's hand.

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

Flying

As Dracoplasm enters the battlefield, sacrifice any number of creatures. Dracoplasm's power becomes the total power of those creatures and its toughness becomes their total toughness.

{R}: Dracoplasm gets +1/+0 until end of turn.

{2}, {T}: You gain 5 life. Shuffle Elixir of Immortality and your graveyard into their owner's library.

{1}{U}{R}: Return Etherium-Horn Sorcerer to its owner's hand.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)

Whenever you get one or more {E} (energy counters), put a +1/+1 counter on target creature you control.

{4}, {T}: You get {E}.

Ferropede can't be blocked.

Whenever Ferropede deals combat damage to a player, you may remove a counter from target permanent.

Firemind Vessel enters the battlefield tapped.

{T}: Add two mana of different colors.

{T}: Add one mana of any color.

{3}: Fountain of Ichor becomes a 3/3 Dinosaur artifact creature until end of turn.

Whenever a nontoken creature enters the battlefield, if Genesis Chamber is untapped, that creature's controller creates a 1/1 colorless Myr artifact creature token.

Defender

{2}: Golden Guardian fights another target creature you control. When Golden Guardian dies this turn, return it to the battlefield transformed under your control.

(Transforms from Golden Guardian.)

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

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

Whenever you cast an artifact spell, you may put a charge counter on Golem Foundry.

Remove three charge counters from Golem Foundry: Create a 3/3 colorless Golem artifact creature token.

Whenever Gonti's Aether Heart or another artifact enters the battlefield under your control, you get {E}{E} (two energy counters).

Pay {E}{E}{E}{E}{E}{E}{E}{E}, Exile Gonti's Aether Heart: Take an extra turn after this one.

Defender (This creature can't attack.)

When a creature attacks you or a planeswalker you control, if Guardian of the Ages has defender, it loses defender and gains trample.

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

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

Equipped creature gets +X/+X, where X is its mana value.

Equip {4}

Equipped creature has first strike, trample, and haste.

{1}: If you control Equipment named Helm of Kaldra, Sword of Kaldra, and Shield of Kaldra, create Kaldra, a legendary 4/4 colorless Avatar creature token. Attach those Equipment to it.

Equip {2}

Highland Lake enters the battlefield tapped.

{T}: Add {U} or {R}.

Whenever you draw your second card each turn, create a 1/1 blue Faerie creature token with flying.

{4}{U}{R}: Draw a card, then discard a card.

Nonartifact spells you cast have improvise. (Your artifacts can help cast those spells. Each artifact you tap after you're done activating mana abilities pays for {1}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Izzet Boilerworks enters the battlefield tapped.

When Izzet Boilerworks enters the battlefield, return a land you control to its owner's hand.

{T}: Add {U}{R}.

{T}: Add {U} or {R}.

{U}{R}, {T}, Sacrifice Izzet Cluestone: Draw a card.

{T}: Add {U} or {R}.

{U}{R}: Until end of turn, Izzet Keyrune becomes a 2/1 blue and red Elemental artifact creature.

Whenever Izzet Keyrune deals combat damage to a player, you may draw a card. If you do, discard a card.

{T}: Add {U} or {R}.

{U/R}{U/R}{U/R}{U/R}, {T}, Sacrifice Izzet Locket: Draw two cards.

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

Whenever you cast a historic spell, draw a card. (Artifacts, legendaries, and Sagas are historic.)

Whenever you cast your second spell each turn, draw a card.

Flying, haste

Whenever an opponent casts their second spell each turn, draw a card.

Partner (You can have two commanders if both have partner.)

{T}: Add {C}.

{4}, {T}: Remove target attacking or blocking creature from combat.

Double strike, haste

Whenever Lightning Runner attacks, you get {E}{E} (two energy counters), then you may pay {E}{E}{E}{E}{E}{E}{E}{E}. If you pay, untap all creatures you control, and after this phase, there is an additional combat phase.

At the beginning of each player's end step, that player may draw a card if a player other than you lost life this turn.

Partner (You can have two commanders if both have partner.)

Magosi, the Waterveil enters the battlefield tapped.

{T}: Add {U}.

{U}, {T}: Put an eon counter on Magosi, the Waterveil. Skip your next turn.

{T}, Remove an eon counter from Magosi, the Waterveil and return it to its owner's hand: Take an extra turn after this one.

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

{1}{U}{R}: Target creature you control gains haste until end of turn and can't be blocked this turn.

{U}, {T}: Draw two cards.

{R}, {T}, Discard a card: Mercurial Chemister deals damage to target creature equal to the discarded card's mana value.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

Raid -- If you attacked this turn, you may have Protean Raider enter the battlefield as a copy of any creature on the battlefield.

{T}: Add {C}.

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

+1: Scry 1. Saheeli Rai deals 1 damage to each opponent.

-2: Create a token that's a copy of target artifact or creature you control, except it's an artifact in addition to its other types. That token gains haste. Exile it at the beginning of the next end step.

-7: Search your library for up to three artifact cards with different names, put them onto the battlefield, then shuffle.

Whenever you cast a noncreature spell, create a 1/1 colorless Servo artifact creature token.

-2: Target artifact you control becomes a copy of another target artifact or creature you control until end of turn, except it's an artifact in addition to its other types.

Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying.

{1}{U}, Sacrifice two artifacts: Draw a card.

{T}: Scepter of Empires deals 1 damage to target player or planeswalker. It deals 3 damage instead if you control artifacts named Crown of Empires and Throne of Empires.

Equipment named Sword of Kaldra, Shield of Kaldra, and Helm of Kaldra have indestructible.

Equipped creature has indestructible. (Damage and effects that say "destroy" don't destroy it.)

Equip {4}

Whenever Skyclaw Thrash attacks, flip a coin. If you win the flip, Skyclaw Thrash gets +1/+1 and gains flying until end of turn.

Spirebluff Canal enters the battlefield tapped unless you control two or fewer other lands.

{T}: Add {U} or {R}.

Whenever one or more creatures you control deal combat damage to a player, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

At the beginning of your end step, if you control five or more artifacts, transform Storm the Vault.

(Transforms from Storm the Vault.)

{T}: Add one mana of any color.

{T}: Add {U} for each artifact you control.

Indestructible

As Stuffy Doll enters the battlefield, choose a player.

Whenever Stuffy Doll is dealt damage, it deals that much damage to the chosen player.

{T}: Stuffy Doll deals 1 damage to itself.

Equipped creature gets +5/+5.

Whenever equipped creature deals damage to a creature, exile that creature. (Exile it only if it's still on the battlefield.)

Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)

Haste

{U}{R}, {T}: Copy target activated or triggered ability you control from an artifact source. You may choose new targets for the copy. (Mana abilities can't be targeted.)

{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 Thundering Djinn attacks, it deals damage to any target equal to the number of cards you've drawn this turn.

When Whirler Virtuoso enters the battlefield, you get {E}{E}{E} (three energy counters).

Pay {E}{E}{E}: Create a 1/1 colorless Thopter artifact creature token with flying.