Last edited: Hunga Oh no
Turning every artifact into a mana source enables explosive turns, and when paired with cards like Paradox Engine, it allows you to cast spells and untap permanents repeatedly, quickly spiraling into overwhelming advantage or outright wins
Its a satisfying substitute for the real thing
That points to a short list: rare vintage cards, graded Alpha, Beta, and Unlimited printings, signed cards, misprints, artist proofs, serialized cards, and full collections where the value is hard to total
It also has a decent relation to a new mechanic in Zendikar Rising
If it really is a four-of in a tier one deck, its price could be on the rise, especially once Ugin, the Spirit Dragon rotates this spring