When Aether Hub enters the battlefield, you get {E} (an energy counter).
{T}: Add {C}.
{T}, Pay {E}: Add one mana of any color.
{1}{B}
Aether Poisoner
Creature - Human Artificer
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
When Aether Poisoner enters the battlefield, you get {E}{E} (two energy counters).
Whenever Aether Poisoner attacks, you may pay {E}{E}. If you do, create a 1/1 colorless Servo artifact creature token.
1 /
1
{1}{U}
Aether Swooper
Creature - Vedalken Artificer
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.
1 /
2
{1}{U}
Aether Theorist
Creature - Vedalken Rogue
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.)
1 /
3
{1}{W}
Aethergeode Miner
Creature - Dwarf Scout
Whenever Aethergeode Miner attacks, you get {E}{E} (two energy counters).
Pay {E}{E}: Exile Aethergeode Miner, then return it to the battlefield under its owner's control.
3 /
1
{5}{U}{U}
Aethersquall Ancient
Creature - Leviathan
Flying
At the beginning of your upkeep, you get {E}{E}{E} (three energy counters).
Pay eight {E}: Return all other creatures to their owners' hands. Activate only as a sorcery.
6 /
6
{2}{W}{W}
Aetherstorm Roc
Creature - Bird
Flying
Whenever Aetherstorm Roc or another creature enters the battlefield under your control, you get {E} (an energy counter).
Whenever Aetherstorm Roc attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it and tap up to one target creature defending player controls.
3 /
3
{4}{U}{U}
Aethertide Whale
Creature - Whale
Flying
When Aethertide Whale enters the battlefield, you get six {E} (energy counters).
Pay {E}{E}{E}{E}: Return Aethertide Whale to its owner's hand.
6 /
4
{2}{R}
Aethertorch Renegade
Creature - Human Rogue
When Aethertorch Renegade enters the battlefield, you get {E}{E}{E}{E} (four energy counters).
{T}, Pay {E}{E}{E}{E}{E}{E}{E}{E}: Aethertorch Renegade deals 6 damage to target player or planeswalker.
1 /
2
{4}{G}{G}{G}
Aetherwind Basker
Creature - Lizard
Trample
Whenever Aetherwind Basker enters the battlefield or attacks, you get {E} (an energy counter) for each creature you control.
Pay {E}: Aetherwind Basker gets +1/+1 until end of turn.
7 /
7
{4}
Aetherworks Marvel
Legendary Artifact
Whenever a permanent you control is put into a graveyard, you get {E} (an energy counter).
{T}, Pay six {E}: Look at the top six cards of your library. You may cast a spell from among them without paying its mana cost. Put the rest on the bottom of your library in a random order.
{2}{G}
Architect of the Untamed
Creature - Elf Artificer Druid
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.
2 /
3
{2}{G}{G}
Bristling Hydra
Creature - Hydra
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.
4 /
3
{3}{U}{U}
Confiscation Coup
Sorcery
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.
{3}{W}
Consul's Shieldguard
Creature - Dwarf Soldier
When Consul's Shieldguard enters the battlefield, you get {E}{E} (two energy counters).
Whenever Consul's Shieldguard attacks, you may pay {E}. If you do, another target attacking creature gains indestructible until end of turn.
3 /
4
{3}{W}
Consulate Surveillance
Enchantment
When Consulate Surveillance enters the battlefield, you get {E}{E}{E}{E} (four energy counters).
Pay {E}{E}: Prevent all damage that would be dealt to you this turn by a source of your choice.
{3}
Consulate Turret
Artifact
{T}: You get {E} (an energy counter).
{T}, Pay {E}{E}{E}: Consulate Turret deals 2 damage to target player or planeswalker.
{3}
Deadlock Trap
Artifact
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.
{2}
Decoction Module
Artifact
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.
{3}{B}{B}{B}
Demon of Dark Schemes
Creature - Demon
Flying
When Demon of Dark Schemes enters the battlefield, all other creatures get -2/-2 until end of turn.
Whenever another creature dies, you get {E} (an energy counter).
{2}{B}, Pay {E}{E}{E}{E}: Put target creature card from a graveyard onto the battlefield under your control tapped.
5 /
5
{1}{B}
Die Young
Sorcery
Choose target creature. You get {E}{E} (two energy counters), then you may pay any amount of {E}. The creature gets -1/-1 until end of turn for each {E} paid this way.
{1}{R}
Dockside Extortionist
Creature - Goblin Pirate
When Dockside Extortionist enters the battlefield, create X Treasure tokens, where X is the number of artifacts and enchantments your opponents control. (Treasure tokens are artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")
1 /
2
{3}
Dynavolt Tower
Artifact
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.
{1}{W}
Eddytrail Hawk
Creature - Bird
Flying
When Eddytrail Hawk enters the battlefield, you get {E}{E} (two energy counters).
Whenever Eddytrail Hawk attacks, you may pay {E}. If you do, another target attacking creature gains flying until end of turn.
1 /
2
{1}{G}{U}
Empyreal Voyager
Creature - Vedalken Scout
Flying, trample
Whenever Empyreal Voyager deals combat damage to a player, you get that many {E} (energy counters).
2 /
3
{1}{U}
Era of Innovation
Enchantment
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 six {E}, Sacrifice Era of Innovation: Draw three cards.
{3}
Fabrication Module
Artifact
Whenever you get one or more {E} (energy counters), put a +1/+1 counter on target creature you control.
{4}, {T}: You get {E}.
{3}{U}
Glimmer of Genius
Instant
Scry 2, then draw two cards. You get {E}{E} (two energy counters).
{1}{B}
Glint-Sleeve Siphoner
Creature - Human Rogue
Menace
Whenever Glint-Sleeve Siphoner enters the battlefield or attacks, you get {E} (an energy counter).
At the beginning of your upkeep, you may pay {E}{E}. If you do, you draw a card and you lose 1 life.
2 /
1
{6}
Gonti's Aether Heart
Legendary Artifact
Whenever Gonti's Aether Heart or another artifact enters the battlefield under your control, you get {E}{E} (two energy counters).
Pay eight {E}, Exile Gonti's Aether Heart: Take an extra turn after this one.
{B}
Gonti's Machinations
Enchantment
Whenever you lose life for the first time each turn, you get {E}. (You get an energy counter. Damage causes loss of life.)
Pay {E}{E}, Sacrifice Gonti's Machinations: Each opponent loses 3 life. You gain life equal to the life lost this way.
{1}{R}
Harnessed Lightning
Instant
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.
{2}{U}
Janjeet Sentry
Creature - Vedalken Soldier
When Janjeet Sentry enters the battlefield, you get {E}{E} (two energy counters).
{T}, Pay {E}{E}: You may tap or untap target artifact or creature.
2 /
3
{3}{R}{R}
Lightning Runner
Creature - Human Warrior
Double strike, haste
Whenever Lightning Runner attacks, you get {E}{E} (two energy counters), then you may pay eight {E}. If you pay, untap all creatures you control, and after this phase, there is an additional combat phase.
2 /
2
{2}{B}
Live Fast
Sorcery
You draw two cards, lose 2 life, and get {E}{E} (two energy counters).
{1}{G}
Longtusk Cub
Creature - Cat
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.
2 /
2
{W}{W}{U}{U}{B}{B}{R}{R}{G}{G}
Progenitus
Legendary Creature - Hydra Avatar
Protection from everything
If Progenitus would be put into a graveyard from anywhere, reveal Progenitus and shuffle it into its owner's library instead.
10 /
10
{1}{G}{U}
Rogue Refiner
Creature - Human Rogue
When Rogue Refiner enters the battlefield, draw a card and you get {E}{E} (two energy counters).
3 /
2
{3}{R}
Scrapper Champion
Creature - Human Artificer
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.
2 /
2
{1}{G}
Servant of the Conduit
Creature - Elf Druid
When Servant of the Conduit enters the battlefield, you get {E}{E} (two energy counters).
{T}, Pay {E}: Add one mana of any color.
2 /
2
{1}{U}
Shielded Aether Thief
Creature - Vedalken Rogue
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.
0 /
4
{3}{W}
Smothering Tithe
Enchantment
Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")
{3}{R}
Spontaneous Artist
Creature - Human Rogue
When Spontaneous Artist enters the battlefield, you get {E} (an energy counter).
Pay {E}: Target creature gains haste until end of turn.
3 /
3
{1}{G}
Sylvan Library
Enchantment
At the beginning of your draw step, you may draw two additional cards. If you do, choose two cards in your hand drawn this turn. For each of those cards, pay 4 life or put the card on top of your library.
{1}{U}{R}
Whirler Virtuoso
Creature - Vedalken Artificer
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.
2 /
3
{B}{G}
Winding Constrictor
Creature - Snake
If one or more counters would be put on an artifact or creature you control, that many plus one of each of those kinds of counters are put on that permanent instead.
If you would get one or more counters, you get that many plus one of each of those kinds of counters instead.