Evolving Wilds

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Gold Myr

Island

Urtet, Remnant of Memnarch

Whenever you cast a Myr spell, create a 1/1 colorless Myr artifact creature token.
At the beginning of combat on your turn, untap each Myr you control.
{W}{U}{B}{R}{G}, {T}: Put three +1/+1 counters on each Myr you control. Activate only during your turn.

Myr Retriever

When this creature dies, return another target artifact card from your graveyard to your hand.

Silver Myr

Alloy Myr

Iron Myr

Myr Enforcer

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

Myr Galvanizer

Other Myr creatures you control get +1/+1.
{1}, {T}: Untap each other Myr you control.

Terramorphic Expanse

Plains

Introduction to Annihilation

Exile target nonland permanent. Its controller draws a card.

Leaden Myr

Spire of Industry

{T}: Add {C}.
{T}, Pay 1 life: Add one mana of any color. Activate only if you control an artifact.

Forest

Mountain

Swamp

Lodestone Myr

Trample
Tap an untapped artifact you control: This creature gets +1/+1 until end of turn.