City of Traitors

When you play another land, sacrifice this land.
{T}: Add {C}{C}.

Mox Diamond

If this artifact would enter, you may discard a land card instead. If you do, put this artifact onto the battlefield. If you don't, put it into its owner's graveyard.
{T}: Add one mana of any color.

Rishadan Port

Mishra's Factory

{T}: Add {C}.
{1}: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Serra's Sanctum

{T}: Add {W} for each enchantment you control.

Glowrider

Noncreature spells cost {1} more to cast.

Exploration

You may play an additional land on each of your turns.

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.

Wasteland

{T}: Add {C}.
{T}, Sacrifice this land: Destroy target nonbasic land.

Sphere of Resistance

Ancient Tomb

{T}: Add {C}{C}. This land deals 2 damage to you.