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.

Target creature gets +3/+0 and gains haste until end of turn. Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Target creature gets +2/+1 and gains haste until end of turn. Scry 1.

Copy target instant or sorcery spell. You may choose new targets for the copy.

Add {R} for each creature you control.

Add {R} for each Goblin on the battlefield.

When this creature enters, create three 0/1 colorless Eldrazi Spawn creature tokens. They have "Sacrifice this token: Add {C}."

{T}: Add {C}. {T}: Roll the planar die. Activate only as a sorcery.

This artifact enters tapped. {T}: Add {C}. {2}: This artifact becomes a 2/2 Golem artifact creature until end of turn.

{T}: Add {C}. ({C} represents colorless mana.)

As an additional cost to cast this spell, sacrifice a creature. Add {R}{R}{R}.

Add {R} for each card in your hand.

{T}: Add {R}.

Add {R} for each tapped land your opponents control.

{T}: Add {C}.

{T}, Mill a card: Add {C}. (To mill a card, put the top card of your library into your graveyard.)

{T}: Add {C}{C}.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) {T}: Add {C}.

{T}: Add {C}. {1}, {T}: Add one mana of any color.

Whenever you cast a red spell, if this creature has fewer than three +1/+1 counters on it, put a +1/+1 counter on this creature. Remove three +1/+1 counters from this creature: Add {R}{R}{R}.

Add {R}{R}{R}{R}{R}.

Sacrifice a Goblin: Add {R}.

{T}: Add {C}{C}.

When this creature enters, create two 1/1 red Goblin creature tokens.

As an additional cost to cast this spell, sacrifice X lands. Create two X/X red Elemental creature tokens.

Create two 1/1 red Goblin creature tokens.

Create two 1/1 red Goblin creature tokens. Storm (When you cast this spell, copy it for each spell cast before it this turn.)

Create X 1/1 red Elemental Cat creature tokens with haste. Exile them at the beginning of the next end step. Flashback—{R}{R}, Sacrifice X Mountains. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

When this creature enters, create a 1/1 red Goblin creature token.

Create three 1/1 red Goblin creature tokens.

Create two 1/1 red Goblin creature tokens.

As an additional cost to cast this spell, sacrifice an artifact. Create three 1/1 red Goblin creature tokens.

You may sacrifice two Mountains rather than pay this spell's mana cost. Create two 1/1 red Goblin creature tokens.

Echo {1}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) When this creature enters or dies, create a 1/1 red Goblin creature token.

When this creature enters, create three 1/1 red Goblin creature tokens. {1}{R}, Sacrifice a Goblin: This creature deals 2 damage to any target.

Target creature gains haste until end of turn. Draw a card.

Target creature attacks this turn if able. Draw a card.

As an additional cost to cast this spell, discard two cards. Draw three cards.

Target creature becomes red and gains haste until end of turn. (It can attack and {T} this turn.) Draw a card.

Target creature gains haste until end of turn. Draw a card.

Draw two cards, then discard two cards. Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flip a coin until you lose a flip or choose to stop flipping. If you lose a flip, Fiery Gambit has no effect. If you win one or more flips, Fiery Gambit deals 3 damage to target creature. If you win two or more flips, Fiery Gambit deals 6 damage to each opponent. If you win three or more flips, draw nine cards and untap all lands you control.

Draw a card. Until end of turn, target creature gains trample and gets +1/+0 for each card you've drawn this turn. (A creature with trample can deal excess combat damage to the player or planeswalker it's attacking.)

Target creature can't block this turn. Draw a card.

Rile deals 1 damage to target creature you control. That creature gains trample until end of turn. Draw a card.

Choose target creature. Exile the top card of your library. You may have Spark of Creativity deal damage to that creature equal to the exiled card's mana value. If you don't, you may play that card until end of turn.

This land enters tapped unless you control a Mountain. {T}: Add {R}. {1}{R}{R}, {T}: Creatures you control get +1/+0 until end of turn.

({T}: Add {R}.) This land enters tapped unless you control three or more other Mountains. When this land enters untapped, create a 1/1 red Dwarf creature token.

This land enters tapped. {T}: Add {R}. Cycling {R} ({R}, Discard this card: Draw a card.)

{T}: Add {C}. {1}: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land. {T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Destroy X target artifacts.

Chain Reaction deals X damage to each creature, where X is the number of creatures on the battlefield.

Mizzium Mortars deals 4 damage to target creature you don't control. Overload {3}{R}{R}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

If an opponent controls an Island and you control a Mountain, you may cast this spell without paying its mana cost. Destroy target artifact.

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

Sacrifice a Goblin: Regenerate target creature.

Target creature gets +1/+0 until end of turn. When that creature dies this turn, create a 3/2 colorless Eldrazi Horror creature token.