Have

Seat of the Synod

Radical Idea

Draw a card.
Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)

Utter Insignificance

Flash
Enchant creature
Enchanted creature loses all abilities and has base power and toughness 1/1.
{2}{C}: Exile enchanted creature.

Eye of Malcator

When this artifact enters, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)
Whenever another artifact you control enters, this artifact becomes a 4/4 Phyrexian Eye artifact creature until end of turn.

Vault Skyward

Target creature gains flying until end of turn. Untap it.

Lonely Sandbar

This land enters tapped.
{T}: Add {U}.
Cycling {U} ({U}, Discard this card: Draw a card.)

Getting

Myr Enforcer

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

Spell Pierce

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

Dispel

Taigam's Scheming

Surveil 5. (Look at the top five cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

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.

Mechan Shieldmate

Defender
As long as an artifact entered the battlefield under your control this turn, this creature can attack as though it didn't have defender.

Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.

Guidelight Optimizer

{T}: Add {U}. Spend this mana only to cast an artifact spell or activate an ability.

Spined Thopter

({U/P} can be paid with either {U} or 2 life.)
Flying

Impulse

Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

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.)

Tome Scour

Island

Refute

Counter target spell. Draw a card, then discard a card.

Cloudsculpt Technician

Flying
As long as you control an artifact, this creature gets +1/+0.

Cryoshatter

Enchant creature
Enchanted creature gets -5/-0.
When enchanted creature becomes tapped or is dealt damage, destroy it.

Divert Disaster

Counter target spell unless its controller pays {2}. If they do, you create a Lander token. (It's an artifact with "{2}, {T}, Sacrifice this token: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.")

Wall of Runes

Defender (This creature can't attack.)
When this creature enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Screeching Silcaw

Flying
Metalcraft — Whenever this creature deals combat damage to a player, if you control three or more artifacts, that player mills four cards.

Spectral Interference

Counter target artifact or creature spell unless its controller pays {4}.