When Aether Hub enters the battlefield, you get {E} (an energy counter).

{T}: Add {C}.

{T}, Pay {E}: Add one mana of any color.

Flying

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

Whenever Aether Swooper attacks, you may pay {E}{E}. If you do, create a 1/1 colorless Servo artifact creature token.

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

{T}, Pay {E}: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Flying

At the beginning of your upkeep, you get {E}{E}{E} (three energy counters).

Pay {E}{E}{E}{E}{E}{E}{E}{E}: Return all other creatures to their owners' hands. Activate only as a sorcery.

Whenever you put one or more counters on a permanent or player, All Will Be One deals that much damage to target opponent, creature an opponent controls, or planeswalker an opponent controls.

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

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.

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

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

Pay {E}{E}{E}{E}{E}{E}{E}{E}: Create a 6/6 colorless Beast artifact creature token.

Search your library for a basic land card, reveal it, put it into your hand, then shuffle. You get {E}{E} (two energy counters).

({T}: Add {G} or {U}.)

As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

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

Pay {E}{E}{E}: Put a +1/+1 counter on Bristling Hydra. It gains hexproof until end of turn.

Lands you control have "{T}: Add one mana of any color."

{T}: Add one mana of any color.

As Cloud Key enters the battlefield, choose artifact, creature, enchantment, instant, or sorcery.

Spells you cast of the chosen type cost {1} less to cast.

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

Choose target artifact or creature. You get {E}{E}{E}{E} (four energy counters), then you may pay an amount of {E} equal to that permanent's mana value. If you do, gain control of it.

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

Draw a card.

Deadlock Trap enters the battlefield tapped.

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

{T}, Pay {E}: Tap target creature or planeswalker. Its activated abilities can't be activated this turn.

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.

Copy target creature spell you control, except it isn't legendary if the spell is legendary. (A copy of a creature spell becomes a token.)

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.

If an effect would put one or more counters on a permanent you control, it puts twice that many of those counters on that permanent instead.

Whenever you cast an instant or sorcery spell, you get {E}{E} (two energy counters).

{T}, Pay {E}{E}{E}{E}{E}: Dynavolt Tower deals 3 damage to any target.

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

Pay {E}{E}{E}: Electrostatic Pummeler gets +X/+X until end of turn, where X is its power.

Flying

Artifact spells you cast cost {1} less to cast.

Whenever an artifact or Artificer enters the battlefield under your control, you may pay {1}. If you do, you get {E}{E} (two energy counters).

Pay {E}{E}{E}{E}{E}{E}, Sacrifice Era of Innovation: Draw three cards.

Artifact spells you cast cost {1} less to cast.

Landfall -- Whenever a land enters the battlefield under your control, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

{T}: Add one mana of any color that a land an opponent controls could produce.

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Search your library for an artifact card, reveal it, put it into your hand, then shuffle.

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

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

Whenever a nontoken creature enters the battlefield under your control, you may pay {R}. If you do, create a token that's a copy of that creature. That token gains haste. Exile it at the beginning of the next end step.

Artifact spells you cast cost {1} less to cast.

Frontier Bivouac enters the battlefield tapped.

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

Counter target spell, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Scry 2, then draw two cards. You get {E}{E} (two energy counters).

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.

When Greenbelt Rampager enters the battlefield, pay {E}{E} (two energy counters). If you can't, return Greenbelt Rampager to its owner's hand and you get {E}.

Draw a card. You may put a land card from your hand onto the battlefield.

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

Gruul Turf enters the battlefield tapped.

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

{T}: Add {R}{G}.

{T}: Add {C}.

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

{3}, {T}, Pay X {E}, Sacrifice HELIOS One: Destroy target nonland permanent with mana value X. Activate only as a sorcery.

Choose target creature. You get {E}{E}{E} (three energy counters), then you may pay any amount of {E}. Harnessed Lightning deals that much damage to that creature.

Hinterland Harbor enters the battlefield tapped unless you control a Forest or an Island.

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

Whenever you cast a spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Imprint -- When Isochron Scepter enters the battlefield, you may exile an instant card with mana value 2 or less from your hand.

{2}, {T}: You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.

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}.

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

({T}: Add {G}, {U}, or {R}.)

Ketria Triome enters the battlefield tapped.

Cycling {3} ({3}, Discard this card: Draw a card.)

If you would draw a card while your library has no cards in it, you win the game instead.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)

Equip {0}

Whenever Longtusk Cub deals combat damage to a player, you get {E}{E} (two energy counters).

Pay {E}{E}: Put a +1/+1 counter on Longtusk Cub.

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

Pay {E}: Multiform Wonder gains your choice of flying, vigilance, or lifelink until end of turn.

Pay {E}: Multiform Wonder gets +2/-2 or -2/+2 until end of turn.

You may look at the top card of your library any time.

You may cast artifact spells and colorless spells from the top of your library.

{T}, Pay 1 life: Exile the top card of your library.

Counter target noncreature spell.

If an artifact or creature entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.

Counter target spell. If that spell's mana value was 3 or less, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Rejuvenating Springs enters the battlefield tapped unless you have two or more opponents.

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

{T}: Add one mana of any color.

At the beginning of your upkeep, put a night counter on Replicating Ring. Then if it has eight or more night counters on it, remove all of them and create eight colorless snow artifact tokens named Replicated Ring with "{T}: Add one mana of any color."

Whenever you cast an instant or sorcery spell, you may pay {U}{R}. If you do, copy that spell. You may choose new targets for the copy.

Whenever another nontoken creature enters the battlefield under your control, you may pay {G}{U}. If you do, create a token that's a copy of that creature.

Kicker {5} (You may pay an additional {5} as you cast this spell.)

Create a token that's a copy of target creature. If this spell was kicked, create five of those tokens instead.

When Rogue Refiner enters the battlefield, draw a card and you get {E}{E} (two energy counters).

Rootbound Crag enters the battlefield tapped unless you control a Mountain or a Forest.

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

When Sage of Shaila's Claim enters the battlefield, you get {E}{E}{E} (three energy counters).

+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.

Double strike (This creature deals both first-strike and regular combat damage.)

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

Whenever Scrapper Champion attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it.

You may have Sculpting Steel enter the battlefield as a copy of any artifact on the battlefield.

{1}: Look at the top three cards of your library, then put them back in any order.

{T}: Draw a card, then put Sensei's Divining Top on top of its owner's library.

Return target nonland permanent to its owner's hand. If that permanent had mana value 3 or less, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

When Servant of the Conduit enters the battlefield, you get {E}{E} (two energy counters).

{T}, Pay {E}: Add one mana of any color.

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

Whenever Shielded Aether Thief blocks, you get {E} (an energy counter).

{T}, Pay {E}{E}{E}: Draw a card.

Simic Growth Chamber enters the battlefield tapped.

When Simic Growth Chamber enters the battlefield, return a land you control to its owner's hand.

{T}: Add {G}{U}.

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

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({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 {C}{C}.

Spire Garden enters the battlefield tapped unless you have two or more opponents.

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

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

As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

({T}: Add {R} or {G}.)

As Stomping Ground enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Sulfur Falls enters the battlefield tapped unless you control an Island or a Mountain.

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

When Thassa's Oracle enters the battlefield, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on top of your library and the rest on the bottom of your library in a random order. If X is greater than or equal to the number of cards in your library, you win the game. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.)

Choose one --

• Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

• Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Training Center enters the battlefield tapped unless you have two or more opponents.

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

If you would copy a spell one or more times, instead copy it that many times plus an additional time. You may choose new targets for the additional copy.

{7}, {T}: Copy target instant or sorcery spell you control. You may choose new targets for the copy.

Return target permanent card from your graveyard to your hand. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I, II -- Tap up to one target creature and put a stun counter on it. You get {E}{E} (two energy counters).

III -- Pay any amount of {E}. If you paid one or more {E} this way, shuffle your library, then exile that many cards from the top. You may play one of those cards without paying its mana cost.

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.