Mirran Spy

Flying
Whenever you cast an artifact spell, you may untap target creature.

Evolving Wilds

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

Devoid (This card has no color.)
{T}: Nettle Drone deals 1 damage to each opponent.
Whenever you cast a colorless spell, untap Nettle Drone.

Whenever an artifact you control enters, Reckless Fireweaver deals 1 damage to each opponent.

Until end of turn, target creature gains "{T}: Return target nonland permanent to its owner's hand."

Halimar Depths enters tapped.
When Halimar Depths enters, look at the top three cards of your library, then put them back in any order.
{T}: Add {U}.

Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.

Target creature gains haste until end of turn.
Draw a card.

Battered Golem doesn't untap during your untap step.
Whenever an artifact enters, you may untap Battered Golem.