Origin Spellbomb

{1}, {T}, Sacrifice this artifact: Create a 1/1 colorless Myr artifact creature token.
When this artifact is put into a graveyard from the battlefield, you may pay {W}. If you do, draw a card.

Goldmire Bridge

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

Razortide Bridge

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

Myr Enforcer

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

Sunbeam Spellbomb

{W}, Sacrifice this artifact: You gain 5 life.
{1}, Sacrifice this artifact: Draw a card.

Scrapyard Salvo

Scrapyard Salvo deals damage to target player or planeswalker equal to the number of artifact cards in your graveyard.

Slagwoods Bridge

This land enters tapped.
Indestructible
{T}: Add {R} or {G}.

Thornglint Bridge

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

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.

Shiny Impetus

Enchant creature
Enchanted creature gets +2/+2 and is goaded. (It attacks each combat if able and attacks a player other than you if able.)
Whenever enchanted creature attacks, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Tanglepool Bridge

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

Etherium Sculptor

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

Terrarion

This artifact enters tapped.
{2}, {T}, Sacrifice this artifact: Add two mana in any combination of colors.
When this artifact is put into a graveyard from the battlefield, draw a card.

Darksteel Citadel

Ichor Wellspring

When this artifact enters or is put into a graveyard from the battlefield, draw a card.

Drossforge Bridge

This land enters tapped.
Indestructible
{T}: Add {B} or {R}.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Reckless Fireweaver

Whenever an artifact you control enters, this creature deals 1 damage to each opponent.

Rustvale Bridge

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

Mukotai Ambusher

Ninjutsu {1}{B} ({1}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Lifelink

Ice Out

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)
This spell costs {1} less to cast if it's bargained.
Counter target spell.

Moriok Replica

{1}{B}, Sacrifice this creature: You draw two cards and you lose 2 life.

Into Thin Air

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Return target artifact to its owner's hand.

All That Glitters

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

Gingerbrute

Haste (This creature can attack and {T} as soon as it comes under your control.)
{1}: This creature can't be blocked this turn except by creatures with haste.
{2}, {T}, Sacrifice this creature: You gain 3 life.

Kessig Flamebreather

Whenever you cast a noncreature spell, this creature deals 1 damage to each opponent.

Unsummon

Return target creature to its owner's hand.

Silverbluff Bridge

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

Pristine Talisman

Pyrite Spellbomb

{R}, Sacrifice this artifact: It deals 2 damage to any target.
{1}, Sacrifice this artifact: Draw a card.

Mistvault Bridge

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

Darkmoss Bridge

This land enters tapped.
Indestructible
{T}: Add {B} or {G}.

Kellan's Lightblades

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)
Kellan's Lightblades deals 3 damage to target attacking or blocking creature. If this spell was bargained, destroy that creature instead.