Equipped creature gets +1/+0 for each artifact you control. {B}{B}: Attach Cranial Plating to target creature you control. Equip {1}

Whenever an artifact is put into a graveyard from the battlefield, you may have target opponent lose 1 life.

Metalcraft — Etched Champion has protection from all colors as long as you control three or more artifacts.

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

Haste {1}: Gingerbrute can't be blocked this turn except by creatures with haste. {2}, {T}, Sacrifice Gingerbrute: You gain 3 life.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Ward {4} Whenever an artifact enters the battlefield under your control, put a +1/+1 counter on Kappa Cannoneer and it can't be blocked this turn.

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}.

{T}, Sacrifice Mishra's Bauble: Look at the top card of target player's library. Draw a card at the beginning of the next turn's upkeep.

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

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

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Phyrexian Germ creature token, then attach this to it.) Equipped creature gets +1/+1 for each artifact and/or enchantment you control. Equip {2}

Flying

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.) Signal Pest can't be blocked except by creatures with flying or reach.

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.)

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

{T}: Put a +1/+1 counter on each artifact creature you control.

+1: Look at the top five cards of your library. You may reveal an artifact card from among them and put it into your hand. Put the rest on the bottom of your library in any order. −1: Target artifact becomes an artifact creature with base power and toughness 5/5. −4: Target player loses X life and you gain X life, where X is twice the number of artifacts you control.

Affinity for artifacts Flying When Thought Monitor enters the battlefield, draw two cards.

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

When Urza, Lord High Artificer enters the battlefield, create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control." Tap an untapped artifact you control: Add {U}. {5}: Shuffle your library, then exile the top card. Until end of turn, you may play that card without paying its mana cost.

Artifact spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting an artifact spell pays for {1} or one mana of that creature's color.)