Cavern of Souls

As Cavern of Souls enters the battlefield, choose a creature type. {T}: Add {1} to your mana pool. {T}: Add one mana of any color to your mana pool. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

Stony Silence

Activated abilities of artifacts can't be activated.

Stubborn Denial

Counter target noncreature spell unless its controller pays {1}. Ferocious — If you control a creature with power 4 or greater, counter that spell instead.

Gut Shot

({R/P} can be paid with either {R} or 2 life.) Gut Shot deals 1 damage to target creature or player.

Urborg, Tomb of Yawgmoth

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

Dismember

({B/P} can be paid with either {B} or 2 life.) Target creature gets -5/-5 until end of turn.

Rest in Peace

When Rest in Peace enters the battlefield, exile all cards from all graveyards. If a card or token would be put into a graveyard from anywhere, exile it instead.

Eldrazi Temple

{T}: Add {1} to your mana pool. {T}: Add {2} to your mana pool. Spend this mana only to cast colorless Eldrazi spells or activate abilities of colorless Eldrazi.

Adarkar Wastes

{T}: Add {1} to your mana pool. {T}: Add {W} or {U} to your mana pool. Adarkar Wastes deals 1 damage to you.

Caves of Koilos

{T}: Add {1} to your mana pool. {T}: Add {W} or {B} to your mana pool. Caves of Koilos deals 1 damage to you.

Worship

Damage that would reduce your life total to less than 1 instead reduces it to 1 if you control a creature.

Path to Exile

Exile target creature. Its controller may search his or her library for a basic land card, put that card onto the battlefield tapped, then shuffle his or her library.

Flooded Strand

Drowner of Hope

Eldrazi Skyspawner

Endless One

Eldrazi Displacer

Eldrazi Mimic

Reality Smasher

Thought-Knot Seer

Eye of Ugin

Hallowed Fountain

({T}: Add {W} or {U}.) As Hallowed Fountain enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Disenchant

Destroy target artifact or enchantment.

Plains

({T}: Add {W}.)

Island

({T}: Add {U}.)