Mox Amber [Dominaria Prerelease Promos] Fourth Edition When Ancestral Knowledge enters the

When Ancestral Knowledge enters the battlefield

where X is that spell's mana value

Lost to time is the artificer's art of trapping light from a distant star in a ring of purest gold

Set: Champions of Kamigawa Type: Legendary Artifact — Equipment Rarity: Rare Cost: {3} Equipped creature gets +3/+1

you may look at the top X cards of your library

Mox Amber [Dominaria Prerelease Promos] Fourth Edition When Ancestral Knowledge enters theSet: Dominaria Prerelease Promos Type: Legendary Artifact Rarity: Mythic Cost: {0} {T}: Add one mana of any color among legendary creatures and planeswalkers you control. A moment in time made tangible, it has the power to realize epic visions.