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.

Disdainful Stroke

Counter target spell with converted mana cost 4 or greater.

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.

Obstinate Baloth

When Obstinate Baloth enters the battlefield, you gain 4 life. If a spell or ability an opponent controls causes you to discard Obstinate Baloth, put it onto the battlefield instead of putting it into your graveyard.

Engineered Explosives

Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.) {2}, Sacrifice Engineered Explosives: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Engineered Explosives.

Spellskite

{U/P}: Change a target of target spell or ability to Spellskite. ({U/P} can be paid with either {U} or 2 life.)

Dismember

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

Noble Hierarch

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {T}: Add {G}, {W}, or {U} to your mana pool.

Unified Will

Counter target spell if you control more creatures than that spell's controller.

Ancient Stirrings

Look at the top five cards of your library. You may reveal a colorless card from among them and put it into your hand. Then put the rest on the bottom of your library in any order. (Cards with no colored mana in their mana costs are colorless. Lands are also colorless.)

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.

Kitchen Finks

When Kitchen Finks comes into play, you gain 2 life. Persist (When this creature is put into a graveyard from play, if it had no -1/-1 counters on it, return it to play under its owner's control with a -1/-1 counter on it.)

Yavimaya Coast

{T}: Add {1} to your mana pool. {T}: Add {G} or {U} to your mana pool. Yavimaya Coast deals 1 damage to you.

Birds of Paradise

Flying {T}: Add one mana of any color to your mana pool. This ability is played as an interrupt.

Drowner of Hope

Eldrazi Skyspawner

Sanctum of Ugin

Echoing Truth

Matter Reshaper

Natural State

Oath of Nissa

Reality Smasher

Thought-Knot Seer

Elder Deep-Fiend

Botanical Sanctum

Ceremonious Rejection

Walking Ballista

Hashep Oasis

Breeding Pool

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

Grafdigger's Cage

Creature cards in graveyards and libraries can't enter the battlefield. Players can't cast spells from graveyards or libraries.

Island

({T}: Add {U}.)

Forest

({T}: Add {G}.)