This spell costs {X} less to cast, where X is the total amount of noncombat damage dealt to your opponents this turn. Trample Whenever a source you control deals noncombat damage to an opponent, Chandra's Incinerator deals that much damage to target creature or planeswalker that player controls.

Haste Whenever Goblin Guide attacks, defending player reveals the top card of their library. If it's a land card, that player puts it into their hand.

Lightning Bolt deals 3 damage to any target.

As an additional cost to cast this spell, sacrifice a land. Shard Volley deals 3 damage to any target.

({T}: Add {R}.)

{T}: Add {C}. {T}, Pay 1 life: Add {R}. {2}{R}{R}, {T}, Sacrifice a Desert: Ramunap Ruins deals 2 damage to each opponent.

Flame Rift deals 4 damage to each player.

Lava Spike deals 3 damage to target player or planeswalker.

Spectacle {R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.) Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

Rift Bolt deals 3 damage to any target. Suspend 1—{R} (Rather than cast this card from your hand, you may pay {R} and exile it with a time counter on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

Whenever a player casts a red spell, you may gain 1 life.

At the beginning of each player's upkeep, Roiling Vortex deals 1 damage to them. Whenever a player casts a spell, if no mana was spent to cast that spell, Roiling Vortex deals 5 damage to that player. {R}: Your opponents can't gain life this turn.

Searing Blood deals 2 damage to target creature. When that creature dies this turn, Searing Blood deals 3 damage to the creature's controller.

Destroy target artifact. Smash to Smithereens deals 3 damage to that artifact's controller.