Lodestone Needle // Guidestone Compass
Artifact // Artifact{1}{U}
Flash When this artifact enters, tap up to one target artifact or creature and put two stun counters on it. Craft with artifact {2}{U} ({2}{U}, Exile this artifact, Exile another artifact you control or an artifact card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.) // {1}, {T}: Target creature you control explores. Activate only as a sorcery. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on that creature, then put the card back or put it into your graveyard.)
Colour identity Blue · Craft, Transform, Explore, Flash
In short
Lodestone Needle // Guidestone Compass has 1 listed printing; the most valuable is the printing from LCI at US$0.26 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
