Defense Grid

Each spell costs {3} more to cast except during its controller's turn.

Ensnaring Bridge

Creatures with power greater than the number of cards in your hand can't attack.

Cursed Scroll

{3}, {T}: Choose a card name, then reveal a card at random from your hand. If that card has the chosen name, Cursed Scroll deals 2 damage to any target.

Flashfires

Boil

Ancient Tomb

{T}: Add {C}{C}. Ancient Tomb deals 2 damage to you.

Ogre Shaman

{2}, Discard a card at random: Ogre Shaman deals 2 damage to any target.

Mountain

Shattering Pulse

Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.)
Destroy target artifact.

Blood Moon

Sphere of Resistance

Iron Star

Whenever a player casts a red spell, you may pay {1}. If you do, you gain 1 life.

Lotus Petal

{T}, Sacrifice Lotus Petal: Add one mana of any color.

Kindle

Kindle deals X damage to any target, where X is 2 plus the number of cards named Kindle in all graveyards.

Pyroclasm

Pyroclasm deals 2 damage to each creature.

Hammer of Bogardan

Hammer of Bogardan deals 3 damage to any target.
{2}{R}{R}{R}: Return Hammer of Bogardan from your graveyard to your hand. Activate only during your upkeep.

City of Traitors

When you play another land, sacrifice City of Traitors.
{T}: Add {C}{C}.

Urza's Armor

If a source would deal damage to you, prevent 1 of that damage.

Wasteland

{T}: Add {C}.
{T}, Sacrifice Wasteland: Destroy target nonbasic land.