The one thing white sometimes does that green usually doesn't is to exile the artifact or enchantment
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That means we're basically stuck with this card ONLY able to be a companion to an Ayli, Eternal Pilgrim deck or a Karlov of the Ghost Council deck
Chromatic Lantern in particular is a fantastic reprint, as its currently around $13 at the time of writing
Its clear to me how the second ability can lead to a win and how the full deck list can be built around that plan
Then theres the fact that two signpost uncommons, Arbalest Engineers and Junkyard Genius, as well as two excellent blue cards, Stern Lesson and Urza, Powerstone Prodigy, have good Powerstone synergies