The Zeta Set

Instant

Tap target creature.
Metalcraft — If you control three or more artifacts, exile that creature.

Dispatch

Final Fantasy Commander

Creature — Human Knight

Whenever an Equipment you control enters, you may draw a card.
Metalcraft — Equipment you control have equip {0} as long as you control three or more artifacts.

Puresteel Paladin

Fallout

Energy Reserve

Brotherhood Scribe

Creature — Human Artificer

Metalcraft — {T}: You get {E} (an energy counter). Activate only if you control three or more artifacts.
Whenever you get one or more {E} during your turn, creatures you control get +1/+1 until end of turn.

Special Guests

Galvanic Blast deals 2 damage to any target.
Metalcraft — Galvanic Blast deals 4 damage instead if you control three or more artifacts.

Galvanic Blast

March of the Machine Commander

Creature — Vedalken Wizard

Metalcraft — Whenever this creature attacks, if you control three or more artifacts, creatures your opponents control lose all abilities and have base power and toughness 1/1 until end of turn.

Vedalken Humiliator

Phyrexia: All Will Be One Commander

Legendary Creature — Human Warrior

First strike
Metalcraft — Creatures you control get +3/+0 as long as you control three or more artifacts.

Jor Kadeen, the Prevailer

The Brothers' War Commander

Land — Urza's

{T}: Add {C}.
Metalcraft — {T}: Add {C} for each Urza's land you control. Activate only if you control three or more artifacts.

Urza's Workshop

Creature — Angel

Flying
Metalcraft — Artifacts you control have shroud as long as you control three or more artifacts. (An artifact with shroud can't be the target of spells or abilities.)

Indomitable Archangel

Artifact Creature — Soldier

Metalcraft — This creature has protection from each color as long as you control three or more artifacts.

Etched Champion

Modern Horizons 2

Creature — Vedalken Rogue

This creature can't be blocked.
Metalcraft — This creature gets +1/+0 as long as you control three or more artifacts.

Vedalken Infiltrator

The List

Creature — Vampire Warrior

Metalcraft — When this creature enters, if you control three or more artifacts, target player loses 4 life and you gain 4 life.

Bleak Coven Vampires

Sorcery

Each player shuffles the cards from their hand into their library, then draws that many cards.
Metalcraft — If you control three or more artifacts, Molten Psyche deals damage to each opponent equal to the number of cards that player has drawn this turn.

Molten Psyche

Double Masters

Mox Opal

Quicksilver Lapidary

Legendary Artifact

Metalcraft — {T}: Add one mana of any color. Activate only if you control three or more artifacts.

Modern Masters 2015

Creature — Sphinx

Flying
Metalcraft — {U}: Exile this creature. Return it to the battlefield under your control at the beginning of the next end step. Activate only if you control three or more artifacts.

Argent Sphinx

Metalcraft — This spell costs {1} less to cast if you control three or more artifacts.
Counter target spell.

Stoic Rebuttal

Artifact

Metalcraft — This artifact is a 5/5 Golem artifact creature as long as you control three or more artifacts.

Rusted Relic

Mirrodin Besieged

Creature — Human Soldier

Metalcraft — This creature gets +2/+2 as long as you control three or more artifacts.

Ardent Recruit

Creature — Serpent

Defender
Metalcraft — As long as you control three or more artifacts, this creature gets +2/+2 and can attack as though it didn't have defender.

Spire Serpent

Concussive Bolt deals 4 damage to target player or planeswalker.
Metalcraft — If you control three or more artifacts, creatures controlled by that player or by that planeswalker's controller can't block this turn.

Concussive Bolt

Creature — Human Berserker

Metalcraft — This creature has double strike as long as you control three or more artifacts.

Spiraling Duelist

Target creature gets +2/+2 until end of turn.
Metalcraft — That creature gets +4/+4 until end of turn instead if you control three or more artifacts.

Mirran Mettle

Artifact Creature — Rhino

Razorfield Rhino

Scars of Mirrodin

Auriok Edgewright

Metalcraft — As long as you control three or more artifacts, this creature gets +2/+2 and has flying.

Auriok Sunchaser

Target player sacrifices an attacking creature of their choice.
Metalcraft — That player sacrifices two attacking creatures of their choice instead if you control three or more artifacts.

Dispense Justice

Creature — Elephant Soldier

Ghalma's Warden

Creature — Drake

Flying
Metalcraft — When this creature enters, if you control three or more artifacts, return target creature to its owner's hand.

Lumengrid Drake

Creature — Bird

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

Screeching Silcaw

Metalcraft — {T}: Tap target artifact, creature, or land. Activate only if you control three or more artifacts.

Vedalken Certarch

Metalcraft — When this creature enters, if you control three or more artifacts, this creature gets +3/+3 and gains haste until end of turn.

Blade-Tribe Berserkers

Creature — Phoenix

Flying, haste
Metalcraft — {4}: Return this card from your graveyard to the battlefield. Activate only during your upkeep and only if you control three or more artifacts.

Kuldotha Phoenix

Creature — Elf Artificer

Carapace Forger

Creature — Elf Warrior

Metalcraft — As long as you control three or more artifacts, this creature gets +4/+4 and has trample.

Ezuri's Brigade

Artifact Creature — Horse

Chrome Steed

Artifact Creature — Construct

Metalcraft — This creature has flying as long as you control three or more artifacts.