Sphere of Resistance

Flashfires

Iron Star

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

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.

Wasteland

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

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

Ancient Tomb

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

Lotus Petal

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

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.

Kindle

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

Mage il-Vec

{T}, Discard a card at random: Mage il-Vec deals 1 damage to any target.

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.

Boil

City of Traitors

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

Mountain

Urza's Armor

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

Ogre Shaman

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

Pyroclasm

Pyroclasm deals 2 damage to each creature.