Mishra's Workshop

Tap to add 3 colorless mana to your mana pool. This mana may only be used to cast artifacts.

Bazaar of Baghdad

Tap to take two cards from your library, after which you must immediately discard three from your hand to your graveyard. If you don't have three or more cards in your hand, discard your whole hand. No spells may be cast between drawing and discarding cards.

Sphere of Resistance

All spells cost an additional {1} to play.

Trinisphere

As long as Trinisphere is untapped, each spell that would cost less than three mana to cast costs three mana to cast. (Additional mana in the cost may be paid with any color of mana or colorless mana. For example, a spell that would cost {1}{B} to cast costs {2}{B} to cast instead.)

The Tabernacle at Pendrell Vale

All creatures now require an upkeep cost of {1} in addition to any other upkeep costs they may have. If the upkeep cost for a creature is not paid, the creature is destroyed.

Thorn of Amethyst

Noncreature spells cost {1} more to play.

Phyrexian Revoker

As Phyrexian Revoker enters the battlefield, name a nonland card. Activated abilities of sources with the chosen name can't be activated.

Tangle Wire

Fading 4 (This artifact comes into play with four fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.) At the beginning of each player's upkeep, that player taps an artifact, creature, or land he or she controls for each fade counter on Tangle Wire.

Urborg, Tomb of Yawgmoth

Each land is a Swamp in addition to its other land types.

Bottled Cloister

At the beginning of each opponent's upkeep, remove your hand from the game face down. At the beginning of your upkeep, return all cards removed from the game with Bottled Cloister to your hand, then draw a card.

Mishra's Factory

{T}: Add one colorless mana to your mana pool. {1}: Mishra's Factory becomes an Assembly Worker, a 2/2 artifact creature, until end of turn. Assembly Worker still counts as a land but cannot be tapped for mana the turn it comes into play. {T}: Target Assembly Worker gets +1/+1 until end of turn.

Ensnaring Bridge

Each creature with power greater than the number of cards in your hand cannot attack.

Crucible of Worlds

You may play land cards from your graveyard.

Mox Emerald

Add 1 green mana to your mana pool. Tapping this artifact can be played as an interrupt.

Mox Sapphire

Add 1 blue mana to your mana pool. Tapping this artifact can be played as an interrupt.

Mox Jet

Add 1 black mana to your mana pool. Tapping this artifact can be played as an interrupt.

Mox Ruby

Add 1 red mana to your mana pool. Tapping this artifact can be played as an interrupt.

Mox Pearl

Add 1 white mana to your mana pool. Tapping this artifact can be played as an interrupt.

Smokestack

During your upkeep, you may put a soot counter on Smokestack. During each player's upkeep, that player sacrifices a permanent for each soot counter on Smokestack.

Tolarian Academy

{T}: Add {U} to your mana pool for each artifact you control.

Null Rod

Players cannot play any artifact abilities requiring an activation cost.

Lodestone Golem

Nonartifact spells cost {1} more to cast.

Mindbreak Trap

If an opponent cast three or more spells this turn, you may pay {0} rather than pay Mindbreak Trap's mana cost. Exile any number of target spells.

Sol Ring

Ancient Tomb

Strip Mine

Wasteland

Inventors' Fair