Winter Orb

As long as this artifact is untapped, players can't untap more than one land during their untap steps.

Maze of Ith

{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

Plains

Meekstone

Creatures with power 3 or greater don't untap during their controllers' untap steps.

Wrath of God

Destroy all creatures. They can't be regenerated.

Millstone

Howling Mine

At the beginning of each player's draw step, if this artifact is untapped, that player draws an additional card.

Balance

Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players discard cards and sacrifice creatures the same way.

Sol Ring

Ivory Tower

At the beginning of your upkeep, you gain X life, where X is the number of cards in your hand minus 4.

Conservator

{3}, {T}: Prevent the next 2 damage that would be dealt to you this turn.

Island Sanctuary

If you would draw a card during your draw step, instead you may skip that draw. If you do, until your next turn, you can't be attacked except by creatures with flying and/or islandwalk.

Black Vise

As this artifact enters, choose an opponent.
At the beginning of the chosen player's upkeep, this artifact deals X damage to that player, where X is the number of cards in their hand minus 4.