Swamp

Frogmite

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

Cleansing Wildfire

Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.
Draw a card.

Vault of Whispers

Goldmire Bridge

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

Great Furnace

Blood Fountain

When this artifact enters, create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this token: Draw a card.")
{3}{B}, {T}, Sacrifice this artifact: Return up to two target creature cards from your graveyard to your hand.

Rustvale Bridge

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

Kor Skyfisher

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

Drossforge Bridge

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

Ephemerate

Exile target creature you control, then return it to the battlefield under its owner's control.
Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Refurbished Familiar

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Flying
When this creature enters, each opponent discards a card. For each opponent who can't, you draw a card.

Ichor Wellspring

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

Deadly Dispute

As an additional cost to cast this spell, sacrifice an artifact or creature.
Draw two cards and create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Galvanic Blast

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

Ancient Den

Myr Enforcer

Glint Hawk

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