Elvish Spirit Guide

If Elvish Spirit Guide is in your hand, you may remove it from the game to add {G} to your mana pool. Play this ability as an interrupt.

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.

Spirit of the Labyrinth

Each player can't draw more than one card each turn.

Containment Priest

Flash If a nontoken creature would enter the battlefield and it wasn't cast, exile it instead.

Thalia, Guardian of Thraben

First strike Noncreature spells cost {1} more to cast.

Stony Silence

Activated abilities of artifacts can't be activated.

Eidolon of Rhetoric

Each player can't cast more than one spell each turn.

Mental Misstep

({U/P} can be paid with either {U} or 2 life.) Counter target spell with converted mana cost 1.

Oxidize

Qasali Pridemage

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {1}, Sacrifice Qasali Pridemage: Destroy target artifact or enchantment.

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.

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.

Kataki, War's Wage

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {1}."

Razorverge Thicket

Razorverge Thicket enters the battlefield tapped unless you control two or fewer other lands. {T}: Add {G} or {W} to your mana pool.

Savannah

Counts as both plains and forest and is affected by spells that affect either. Tap to add either {W} or {G} to your mana pool.

Swords to Plowshares

Target creature is removed from game entirely; return to owner's deck only when game is over. Creature's controller gains life points equal to creature's power.

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.

Nature's Claim

Destroy target artifact or enchantment. Its controller gains 4 life.

Horizon Canopy

Strip Mine

Wasteland

Aven Mindcensor

Naturalize

Destroy target artifact or enchantment.

Grafdigger's Cage

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