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 a permanent you control is put into a graveyard, you get {E} (an energy counter). {T}, Pay {E}{E}{E}{E}{E}{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.

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}: You get {E} (an energy counter). {T}, Pay {E}{E}{E}: Consulate Turret deals 2 damage to target player or planeswalker.

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.

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.

Whenever you get one or more {E} (energy counters), put a +1/+1 counter on target creature you control. {4}, {T}: You get {E}.

When Glassblower's Puzzleknot enters the battlefield, scry 2, then you get {E}{E}. (You get two energy counters. To scry 2, look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.) {2}{U}, Sacrifice Glassblower's Puzzleknot: Scry 2, then you get {E}{E}.

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 Aether Herder enters the battlefield, you get {E}{E} (two energy counters). Whenever Aether Herder attacks, you may pay {E}{E}. If you do, create a 1/1 colorless Servo artifact creature token.

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.

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.

Flying When Aethertide Whale enters the battlefield, you get {E}{E}{E}{E}{E}{E} (six energy counters). Pay {E}{E}{E}{E}: Return Aethertide Whale to its owner's hand.

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.

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.

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.

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.

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, trample Whenever Empyreal Voyager deals combat damage to a player, you get that many {E} (energy counters).

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.

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}.

Defender When Hightide Hermit enters the battlefield, you get {E}{E}{E}{E} (four energy counters). Pay {E}{E}: Hightide Hermit can attack this turn as though it didn't have defender.

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.

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 Minister of Inquiries enters the battlefield, you get {E}{E} (two energy counters). {T}, Pay {E}: Target player mills three cards.

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.

When Peema Aether-Seer enters the battlefield, you get an amount of {E} (energy counters) equal to the greatest power among creatures you control. Pay {E}{E}{E}: Target creature blocks this turn if able.

When Reservoir Walker enters the battlefield, you gain 3 life and get {E}{E}{E} (three energy counters).

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

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

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.

When Shipwreck Moray enters the battlefield, you get {E}{E}{E}{E} (four energy counters). Pay {E}: Shipwreck Moray gets +2/-2 until end of turn.

When Thriving Rats enters the battlefield, you get {E}{E} (two energy counters). Whenever Thriving Rats attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it.

When Thriving Rhino enters the battlefield, you get {E}{E} (two energy counters). Whenever Thriving Rhino attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it.

When Thriving Turtle enters the battlefield, you get {E}{E} (two energy counters). Whenever Thriving Turtle attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it.

Flash (You may cast this spell any time you could cast an instant.) Enchant creature or Vehicle When Aether Meltdown enters the battlefield, you get {E}{E} (two energy counters). Enchanted creature gets -4/-0.

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.

As an additional cost to cast this spell, return a permanent you control to its owner's hand. Counter target spell.

Exile up to two target creatures you control, then return those cards to the battlefield under their owner's control.

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.)

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).

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

Target creature gets +3/+3 until end of turn. You get {E}{E} (two energy counters).

Counter target noncreature spell.

Exile target artifact or creature, then return it to the battlefield under its owner's control with a +1/+1 counter on it.

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

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.

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.

You draw two cards, lose 2 life, and get {E}{E} (two energy counters).

If {U}{B} was spent to cast this spell, search your library for a card, put that card into your graveyard, then shuffle. Return up to two permanent cards from your graveyard to your hand.

({U/P} can be paid with either {U} or 2 life.) Draw two cards, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)