Thunderclap

You may sacrifice a Mountain rather than pay this spell's mana cost.
Thunderclap deals 3 damage to target creature.

Mountain

Alabaster Wall

Defender (This creature can't attack.)
{T}: Prevent the next 1 damage that would be dealt to any target this turn.

Laccolith Whelp

Whenever this creature becomes blocked, you may have it deal damage equal to its power to target creature. If you do, this creature assigns no combat damage this turn.

Laccolith Grunt

Volcanic Wind

Volcanic Wind deals X damage divided as you choose among any number of target creatures, where X is the number of creatures on the battlefield as you cast this spell.

Downhill Charge

You may sacrifice a Mountain rather than pay this spell's mana cost.
Target creature gets +X/+0 until end of turn, where X is the number of Mountains you control.

Defender en-Vec

Fading 4 (This creature enters with four fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)
Remove a fade counter from this creature: Prevent the next 2 damage that would be dealt to any target this turn.

Kris Mage

{R}, {T}, Discard a card: This creature deals 1 damage to any target.

Seal of Cleansing

Sacrifice this enchantment: Destroy target artifact or enchantment.

Chieftain en-Dal

Whenever this creature attacks, attacking creatures gain first strike until end of turn.

Flowstone Overseer

{R}{R}: Target creature gets +1/-1 until end of turn.

Laccolith Warrior

Arc Mage

{2}{R}, {T}, Discard a card: This creature deals 2 damage divided as you choose among one or two targets.

Inviolability

Enchant creature
Prevent all damage that would be dealt to enchanted creature.

Oracle's Attendants

{T}: All damage that would be dealt to target creature this turn by a source of your choice is dealt to this creature instead.

Flowstone Armor

You may choose not to untap this artifact during your untap step.
{3}, {T}: Target creature gets +1/-1 for as long as this artifact remains tapped.

Trap Runner

{T}: Target unblocked attacking creature becomes blocked. Activate only during combat after blockers are declared. (This ability works on creatures that can't be blocked.)

Seal of Fire

Sacrifice this enchantment: It deals 2 damage to any target.

Disenchant

Belbe's Armor

{X}, {T}: Target creature gets -X/+X until end of turn.

Iron Lance

{3}, {T}: Target creature gains first strike until end of turn.

Flowstone Crusher

{R}: This creature gets +1/-1 until end of turn.

Sivvi's Ruse

If an opponent controls a Mountain and you control a Plains, you may cast this spell without paying its mana cost.
Prevent all damage that would be dealt this turn to creatures you control.

Plains

Flaming Sword

Flash
Enchant creature
Enchanted creature gets +1/+0 and has first strike.

Crenellated Wall

Defender (This creature can't attack.)
{T}: Target creature gets +0/+4 until end of turn.

Ramosian Rally

If you control a Plains, you may tap an untapped creature you control rather than pay this spell's mana cost.
Creatures you control get +1/+1 until end of turn.