Mesmeric Orb (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] BT03 Set: Portal Three Kingdoms Type:

Set: Portal Three Kingdoms Type: Sorcery Rarity: Rare Cost: {X}{G}{G} Borrowing the East Wind deals X damage to each creature with horsemanship and each player

Set: Introductory Two-Player Set Type: Enchantment Rarity: Uncommon Cost: {3}{R} Attacking creatures you control get +1/+0

Commander Legends D&D Battle for Baldur's Gate Commander Deck

The unearth cost is equal to the card's mana cost

but how could that be

Mesmeric Orb (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] BT03 Set: Portal Three Kingdoms Type:Set: The Brothers' War Retro Artifacts Type: Artifact Rarity: Mythic Cost: {2} Whenever a permanent becomes untapped, that permanent's controller mills a card. "I now believe the strange orb was some kind of Thran security device. Supporting this hteory, I can no longer recall where I found it." Tocasia, journal entry