Seat of the Synod

Sky Diamond

This artifact enters tapped.
{T}: Add {U}.

Ornithopter

Glint Hawk

Flying
When this creature enters, sacrifice it unless you return an artifact you control to its owner's hand.

Gold Pan

When this Equipment enters, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")
Equipped creature gets +1/+1.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Curfew

Each player returns a creature they control to its owner's hand.

Dispel

Aether Spellbomb

{U}, Sacrifice this artifact: Return target creature to its owner's hand.
{1}, Sacrifice this artifact: Draw a card.

Gearseeker Serpent

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
{5}{U}: This creature can't be blocked this turn.

Razortide Bridge

This land enters tapped.
Indestructible
{T}: Add {W} or {U}.

Reverse Engineer

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.

Mystic Sanctuary

({T}: Add {U}.)
This land enters tapped unless you control three or more other Islands.
When this land enters untapped, you may put target instant or sorcery card from your graveyard on top of your library.

Ornithopter of Paradise

Vedalken Engineer

{T}: Add two mana of any one color. Spend this mana only to cast artifact spells or activate abilities of artifacts.

Foundry Inspector

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

Steelfin Whale

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Whenever an artifact you control enters, untap this creature.

Archaeomender

When this creature enters, return target artifact card from your graveyard to your hand.

Banishing Knack

Until end of turn, target creature gains "{T}: Return target nonland permanent to its owner's hand."

Welding Jar

Sacrifice this artifact: Regenerate target artifact.

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Azorius Chancery

This land enters tapped.
When this land enters, return a land you control to its owner's hand.
{T}: Add {W}{U}.

Spell Pierce

Counter target noncreature spell unless its controller pays {2}.

Marble Diamond

This artifact enters tapped.
{T}: Add {W}.

Glassdust Hulk

Whenever another artifact you control enters, this creature gets +1/+1 until end of turn and can't be blocked this turn.
Cycling {W/U} ({W/U}, Discard this card: Draw a card.)

Trinket Mage

When this creature enters, you may search your library for an artifact card with mana value 1 or less, reveal that card, put it into your hand, then shuffle.

Cathar's Shield

Equipped creature gets +0/+3 and has vigilance.
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)

Silver Raven

Flying
When this creature enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Unwind

Counter target noncreature spell. Untap up to three lands.

Gold Myr

Silver Drake

Flying
When this creature enters, return a white or blue creature you control to its owner's hand.

Relic of Progenitus

{T}: Target player exiles a card from their graveyard.
{1}, Exile this artifact: Exile all graveyards. Draw a card.

Island

Silver Myr

Snap

Return target creature to its owner's hand. Untap up to two lands.

Crashing Drawbridge

Defender
{T}: Creatures you control gain haste until end of turn.

Ancient Den

Ethersworn Sphinx

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Flying
Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card with lesser mana value. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Kozilek's Channeler

Treasure

{T}, Sacrifice this token: Add one mana of any color.

Everflowing Chalice

Multikicker {2} (You may pay an additional {2} any number of times as you cast this spell.)
This artifact enters with a charge counter on it for each time it was kicked.
{T}: Add {C} for each charge counter on this artifact.

Maelstrom Colossus

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 in a random order.)

Retraction Helix

All That Glitters

Enchant creature
Enchanted creature gets +1/+1 for each artifact and/or enchantment you control.

Witness Protection

Enchant creature
Enchanted creature loses all abilities and is a green and white Citizen creature with base power and toughness 1/1 named Legitimate Businessperson. (It loses all other colors, card types, creature types, and names.)

Springleaf Drum

{T}, Tap an untapped creature you control: Add one mana of any color.

Tolarian Winds

Discard all the cards in your hand, then draw that many cards.

Elephant

Myr Enforcer

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)

Aether Tradewinds

Return target permanent you control and target permanent you don't control to their owners' hands.

Moonsnare Prototype

{T}, Tap an untapped artifact or creature you control: Add {C}.
Channel — {4}{U}, Discard this card: The owner of target nonland permanent puts it on their choice of the top or bottom of their library.

Mind Stone

{T}: Add {C}.
{1}, {T}, Sacrifice this artifact: Draw a card.

Arcane Signet

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

Dispersal Shield

Counter target spell if its mana value is less than or equal to the greatest mana value among permanents you control.

Arcane Denial

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep.
You draw a card at the beginning of the next turn's upkeep.

Thoughtcast

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Draw two cards.

Commander's Sphere

{T}: Add one mana of any color in your commander's color identity.
Sacrifice this artifact: Draw a card.

Darksteel Citadel

Artificer's Assistant

Flying
Whenever you cast a historic spell, scry 1. (Artifacts, legendaries, and Sagas are historic. To scry 1, look at the top card of your library, then you may put that card on the bottom.)

Lotus Petal

{T}, Sacrifice this artifact: Add one mana of any color.

Command Tower

Generous Gift

Destroy target permanent. Its controller creates a 3/3 green Elephant creature token.

Etherium Sculptor

Bone Saw

Equipped creature gets +1/+0.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Shield Sphere

Defender
Whenever this creature blocks, put a -0/-1 counter on it.

Phyrexian Walker

Tormod's Crypt

{T}, Sacrifice this artifact: Exile target player's graveyard.

Counterspell

Rush of Knowledge

Draw cards equal to the greatest mana value among permanents you control.

Plains

Shrieking Drake

Flying
When this creature enters, return a creature you control to its owner's hand.

Halimar Depths

This land enters tapped.
When this land enters, look at the top three cards of your library, then put them back in any order.
{T}: Add {U}.

Sojourner's Companion

Affinity for artifacts
Artifact landcycling {2} ({2}, Discard this card: Search your library for an artifact land card, reveal it, put it into your hand, then shuffle.)

Fieldmist Borderpost

You may pay {1} and return a basic land you control to its owner's hand rather than pay this spell's mana cost.
This artifact enters tapped.
{T}: Add {W} or {U}.

Herbal Poultice

{3}, Sacrifice this artifact: Regenerate target creature.

Filigree Attendant

Flying
Filigree Attendant's power is equal to the number of artifacts you control.

Run Away Together

Choose two target creatures controlled by different players. Return those creatures to their owners' hands.