Splitting the Powerstone

Sorcery

Powerstone Fracture

Sorcery

Stern Lesson

Instant

A-Urza, Powerstone Prodigy

Legendary Creature — Human Artificer

Urza, Powerstone Prodigy

Legendary Creature — Human Artificer

Geology Enthusiast

Creature — Human Artificer

Costly Plunder

Instant

Azorius Cluestone

Artifact

The Mightstone and Weakstone

Legendary Artifact — Powerstone

Powerstone Shard

Artifact

Mind Stone

Artifact

Demand Answers

Instant

Izzet Cluestone

Artifact

Kaleidostone

Artifact

Stone Retrieval Unit

Artifact Creature — Construct

Sage of Lat-Nam

Creature — Human Artificer

Esoteric Duplicator

Artifact — Clue

Simic Cluestone

Artifact

Terisiare's Devastation

Sorcery

Stonesplitter Bolt

Instant

Fallaji Excavation

Sorcery

Implements of Sacrifice

Artifact

Shrapnel Blast

Instant

Repair and Recharge

Sorcery

Artificer's Epiphany

Instant

Tinker

Sorcery

Metalspinner's Puzzleknot

Artifact

Powerstone Engineer

Creature — Human Artificer

Aether Spellbomb

Artifact

Great Desert Prospector

Creature — Human Artificer

A-Excavation Explosion

Instant