
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. | James Ryman

Aethertide Whale | Creature | Whale | 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. | Steven Belledin

Baral, Chief of Compliance | Legendary Creature | Human Wizard | Instant and sorcery spells you cast cost {1} less to cast.
Whenever a spell or ability you control counters a spell, you may draw a card. If you do, discard a card. | Wesley Burt

Baral's Expertise | Sorcery | | Return up to three target artifacts and/or creatures to their owners' hands.
You may cast a spell with mana value 4 or less from your hand without paying its mana cost. | Todd Lockwood

Bastion Inventor | Creature | Vedalken Artificer | Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Hexproof (This creature can't be the target of spells or abilities your opponents control.) | Tony Foti

Disallow | Instant | | Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.) | Min Yum

Dispersal Technician | Creature | Vedalken Artificer | When Dispersal Technician enters the battlefield, you may return target artifact to its owner's hand. | Scott Murphy

Efficient Construction | Enchantment | | Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying. | Jonas De Ro

Hinterland Drake | Creature | Drake | Flying
Hinterland Drake can't block artifact creatures. | Lake Hurwitz

Ice Over | Enchantment | Aura | Enchant artifact or creature
Enchanted permanent doesn't untap during its controller's untap step. | Sidharth Chaturvedi

Illusionist's Stratagem | Instant | | Exile up to two target creatures you control, then return those cards to the battlefield under their owner's control.
Draw a card. | Svetlin Velinov

Leave in the Dust | Instant | | Return target nonland permanent to its owner's hand.
Draw a card. | Vincent Proce

Mechanized Production | Enchantment | Aura | Enchant artifact you control
At the beginning of your upkeep, create a token that's a copy of enchanted artifact. Then if you control eight or more artifacts with the same name as one another, you win the game. | Adam Paquette

Metallic Rebuke | Instant | | Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Counter target spell unless its controller pays {3}. | Eric Deschamps

Negate | Instant | | Counter target noncreature spell. | Zack Stella

Quicksmith Spy | Creature | Human Artificer | When Quicksmith Spy enters the battlefield, target artifact you control gains "{T}: Draw a card" for as long as you control Quicksmith Spy. | Ryan Alexander Lee

Reverse Engineer | Sorcery | | Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Draw three cards. | Chase Stone

Salvage Scuttler | Creature | Crab | Whenever Salvage Scuttler attacks, return an artifact you control to its owner's hand. | Tony Foti

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. | Lake Hurwitz

Shipwreck Moray | Creature | Fish | 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. | Mike Bierek

Skyship Plunderer | Creature | Human Pirate | 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. | Slawomir Maniak

Take into Custody | Instant | | Tap target creature. It doesn't untap during its controller's next untap step. | David Palumbo

Trophy Mage | Creature | Human Wizard | When Trophy Mage enters the battlefield, you may search your library for an artifact card with mana value 3, reveal it, put it into your hand, then shuffle. | Anna Steinbauer

Whir of Invention | Instant | | Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle. | Christine Choi

Wind-Kin Raiders | Creature | Human Artificer | Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Flying | Shreya Shetty

Spire Patrol | Creature | Human Soldier | Flying
When Spire Patrol enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step. | Dan Scott

Tezzeret the Schemer | Legendary Planeswalker | Tezzeret | +1: Create a colorless artifact token named Etherium Cell with "{T}, Sacrifice this artifact: Add one mana of any color."
−2: Target creature gets +X/-X until end of turn, where X is the number of artifacts you control.
−7: You get an emblem with "At the beginning of combat on your turn, target artifact you control becomes an artifact creature with base power and toughness 5/5." | Ryan Alexander Lee

Tezzeret's Touch | Enchantment | Aura | Enchant artifact
Enchanted artifact is a creature with base power and toughness 5/5 in addition to its other types.
When enchanted artifact is put into a graveyard, return that card to its owner's hand. | Chris Rallis

Maverick Thopterist | Creature | Human Artificer | Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
When Maverick Thopterist enters the battlefield, create two 1/1 colorless Thopter artifact creature tokens with flying. | Zack Stella

Rogue Refiner | Creature | Human Rogue | When Rogue Refiner enters the battlefield, draw a card and you get {E}{E} (two energy counters). | Victor Adame Minguez

Dark Intimations | Sorcery | | Each opponent sacrifices a creature or planeswalker, then discards a card. You return a creature or planeswalker card from your graveyard to your hand, then draw a card.
When you cast a Bolas planeswalker spell, exile Dark Intimations from your graveyard. That planeswalker enters the battlefield with an additional loyalty counter on it. | Chase Stone

Implement of Examination | Artifact | | {U}, Sacrifice Implement of Examination: Draw a card.
When Implement of Examination is put into a graveyard from the battlefield, draw a card. | Darek Zabrocki

Merchant's Dockhand | Artifact Creature | Construct | {3}{U}, {T}, Tap X untapped artifacts you control: Look at the top X cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order. | Christine Choi

Watchful Automaton | Artifact Creature | Construct | {2}{U}: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.) | Eric Deschamps