Tsabo's Web

When Tsabo's Web comes into play, draw a card. Lands with an activated ability that doesn't produce mana don't untap during their controllers' untap steps.

Urborg Volcano

Urborg Volcano comes into play tapped. {T} Add {B} or {R} to your mana pool.

Undermine

Counter target spell. That spell's controller loses 3 life.

Spite/Malice

Counter target noncreature spell. ——— Destroy target nonblack creature. It can't be regenerated.

Salt Marsh

Salt Marsh comes into play tapped. {T}: Add {U} or {B} to your mana pool.

Tsabo's Assassin

{T}: Destroy target creature if that creature shares a color with the most common color among permanents or the color tied for the most common. A creature destroyed this way can't be regenerated.

Tsabo's Decree

Choose a creature type. Target player reveals his or her hand and discards all creature cards of that type from it. Then destroy all creatures of that type that player controls. They can't be regenerated.

Nether Spirit

At the beginning of your upkeep, if Nether Spirit is the only creature card in your graveyard, you may return Nether Spirit to play.

Crosis's Charm

Choose one - Return target permanent to its owner's hand; or destroy target nonblack creature, and it can't be regenerated; or destroy target artifact.

Accumulated Knowledge

Draw a card, then draw cards equal to the number of cards named Accumulated Knowledge in all graveyards.

Fire/Ice

Fire deals 2 damage divided as you choose among any number of target creatures and/or players. ——— Tap target permanent.; Draw a card.

Shivan Reef

{T}: Add {1} to your mana pool. {T}: Add {U} or {R} to your mana pool. Shivan Reef deals 1 damage to you.

Sulfurous Springs

{T}: Add {1} to your mana pool. {T}: Add {B} or {R} to your mana pool. Sulfurous Springs deals 1 damage to you.

Underground River

{T}: Add {1} to your mana pool. {T}: Add {U} or {B} to your mana pool. Underground River deals 1 damage to you.

Counterspell

Counters target spell as it is being cast.

Fact or Fiction

Urza's Rage

Duress

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Opt

Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.) Draw a card.

Island

({T}: Add {U}.)