Molten Tributary

({T}: Add {U} or {R}.)
Molten Tributary enters tapped.

Banishing Knack

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

Ornithopter

Negate

Battered Golem

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

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Retraction Helix

Everflowing Chalice

Multikicker {2} (You may pay an additional {2} any number of times as you cast this spell.)
Everflowing Chalice enters with a charge counter on it for each time it was kicked.
{T}: Add {C} for each charge counter on Everflowing Chalice.

Welding Jar

Sacrifice Welding Jar: Regenerate target artifact.

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

Reckless Fireweaver

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

Island

Mirran Spy

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

Steelfin Whale

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Whenever an artifact you control enters, untap Steelfin Whale.