Millstone - Fourth Edition (Rare)

Millstone is a two-mana artifact from Fourth Edition that allows you to mill two cards from a target player's library for the cost of two mana and tapping it. This makes it a solid choice for control or mill strategies, as it can slowly deplete an opponent's resources while providing a consistent source of card advantage. However, it requires sustaining mana investment and doesn't directly impact the board state, so timing and deck synergy are essential.