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.

Eiganjo Castle

{T}: Add {W} to your mana pool. {W}, {T}: Prevent the next 2 damage that would be dealt to target legendary creature this turn.

Thalia, Guardian of Thraben

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

Auriok Champion

Protection from black and from red Whenever another creature comes into play, you may gain 1 life.

Boros Elite

Battalion — Whenever Boros Elite and at least two other creatures attack, Boros Elite gets +2/+2 until end of turn.

Champion of the Parish

Whenever another Human enters the battlefield under your control, put a +1/+1 counter on Champion of the Parish.

Stony Silence

Activated abilities of artifacts can't be activated.

Grand Abolisher

During your turn, your opponents can't cast spells or activate abilities of artifacts, creatures, or enchantments.

Silence

Your opponents can't cast spells this turn. (Spells cast before this resolves are unaffected.)

Phyrexian Revoker

As Phyrexian Revoker enters the battlefield, name a nonland card. Activated abilities of sources with the chosen name can't be activated.

Chalice of the Void

Chalice of the Void enters the battlefield with X charge counters on it. Whenever a player casts a spell with converted mana cost equal to the number of charge counters on Chalice of the Void, counter that spell.

Mutagenic Growth

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

Mutavault

{T}: Add {1} to your mana pool. {1}: Mutavault becomes a 2/2 creature with all creature types until end of turn. It's still a land.

Honor of the Pure

White creatures you control get +1/+1.

Gather the Townsfolk

Put two 1/1 white Human creature tokens onto the battlefield. Fateful hour — If you have 5 or less life, put five of those tokens onto the battlefield instead.

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.

Ethersworn Canonist

Each player who has played a nonartifact spell this turn can't play additional nonartifact spells.

Soldier of the Pantheon

Protection from multicolored Whenever an opponent casts a multicolored spell, you gain 1 life.

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.

Brave the Elements

Choose a color. White creatures you control gain protection from the chosen color until end of turn.

Thalia, Heretic Cathar

Disenchant

Destroy target artifact or enchantment.