Winter Orb

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

Grave Pact

Whenever a creature you control dies, each other player sacrifices a creature of their choice.

Tormod's Crypt

{T}, Sacrifice this artifact: Exile target player's graveyard.

Mimic Vat

Imprint — Whenever a nontoken creature dies, you may exile that card. If you do, return each other card exiled with this artifact to its owner's graveyard.
{3}, {T}: Create a token that's a copy of a card exiled with this artifact. It gains haste. Exile it at the beginning of the next end step.

Painful Quandary

Whenever an opponent casts a spell, that player loses 5 life unless they discard a card.

Rise of the Dark Realms

Put all creature cards from all graveyards onto the battlefield under your control.

Platinum Angel

Flying
You can't lose the game and your opponents can't win the game.

Akroma's Memorial

Creatures you control have flying, first strike, vigilance, trample, haste, and protection from black and from red.

Curse of Inertia

Enchant player
Whenever a player attacks enchanted player with one or more creatures, that attacking player may tap or untap target permanent of their choice.

The Prismatic Bridge

At the beginning of your upkeep, reveal cards from the top of your library until you reveal a creature or planeswalker card. Put that card onto the battlefield and the rest on the bottom of your library in a random order.

Esika, God of the Tree

Vigilance
{T}: Add one mana of any color.
Other legendary creatures you control have vigilance and "{T}: Add one mana of any color."