Fling

As an additional cost to cast this spell, sacrifice a creature.
Fling deals damage equal to the sacrificed creature's power to any target.

Crawlspace

No more than two creatures can attack you each combat.

Crown of Fury

Enchant creature
Enchanted creature gets +1/+0 and has first strike.
Sacrifice Crown of Fury: Enchanted creature and other creatures that share a creature type with it get +1/+0 and gain first strike until end of turn.

Furnace of Rath

If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Blood Moon

The Brute

Enchant creature
Enchanted creature gets +1/+0.
{R}{R}{R}: Regenerate enchanted creature.

Kamahl's Desire

Enchant creature
Enchanted creature has first strike.
Threshold — Enchanted creature gets +3/+0 as long as seven or more cards are in your graveyard.

Pyroblast

Choose one —
• Counter target spell if it's blue.
• Destroy target permanent if it's blue.

Seize the Day

Untap target creature. After this main phase, there is an additional combat phase followed by an additional main phase.
Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Laccolith Rig

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

Errantry

Enchant creature
Enchanted creature gets +3/+0 and can only attack alone.

Viashino Heretic

{1}{R}, {T}: Destroy target artifact. Viashino Heretic deals damage to that artifact's controller equal to the artifact's mana value.

Shiv's Embrace

Enchant creature
Enchanted creature gets +2/+2 and has flying.
{R}: Enchanted creature gets +1/+0 until end of turn.

Crackling Club

Enchant creature
Enchanted creature gets +1/+0.
Sacrifice Crackling Club: It deals 1 damage to target creature.

Gauntlet of Might

Red creatures get +1/+1.
Whenever a Mountain is tapped for mana, its controller adds an additional {R}.

Giant Strength

Enchant creature
Enchanted creature gets +2/+2.

Red Elemental Blast

Choose one —
• Counter target blue spell.
• Destroy target blue permanent.

Fork

Copy target instant or sorcery spell, except that the copy is red. You may choose new targets for the copy.

Bestial Fury

Enchant creature
When Bestial Fury enters, draw a card at the beginning of the next turn's upkeep.
Whenever enchanted creature becomes blocked, it gets +4/+0 and gains trample until end of turn.

Bravado

Enchant creature
Enchanted creature gets +1/+1 for each other creature you control.

Gamble

Search your library for a card, put that card into your hand, discard a card at random, then shuffle.

Lightning Reflexes

You may cast Lightning Reflexes as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.
Enchant creature
Enchanted creature gets +1/+0 and has first strike.

Maniacal Rage

Enchant creature
Enchanted creature gets +2/+2 and can't block.

Flaming Sword

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

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Ruby Medallion

Red spells you cast cost {1} less to cast.

Gratuitous Violence

If a creature you control would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Firebreathing

Enchant creature
{R}: Enchanted creature gets +1/+0 until end of turn.

Mogg Maniac

Whenever Mogg Maniac is dealt damage, it deals that much damage to target opponent or planeswalker.

Tahngarth, Talruum Hero

Vigilance
{1}{R}, {T}: Tahngarth, Talruum Hero deals damage equal to its power to target creature. That creature deals damage equal to its power to Tahngarth.

Imposing Visage

Enchant creature
Enchanted creature has menace. (It can't be blocked except by two or more creatures.)

Burrowing

Enchant creature
Enchanted creature has mountainwalk. (It can't be blocked as long as defending player controls a Mountain.)

Smoke

Players can't untap more than one creature during their untap steps.

Granite Grip

Enchant creature
Enchanted creature gets +1/+0 for each Mountain you control.

Extra Arms

Enchant creature
Whenever enchanted creature attacks, it deals 2 damage to any target.

Repercussion

Whenever a creature is dealt damage, Repercussion deals that much damage to that creature's controller.

Blood Lust

If target creature has toughness 5 or greater, it gets +4/-4 until end of turn. Otherwise, it gets +4/-X until end of turn, where X is its toughness minus 1.

Price of Progress

Price of Progress deals damage to each player equal to twice the number of nonbasic lands that player controls.