Budget Alternatives to Lightning Bolt

Sunfire Torch $0.06 R · Equipment Equipped creature gets +1/+0 and has "Whenever this creature attacks, you may sacrifice Sunfire T... Pyromatics $0.07 1R · Instant Replicate {1}{R} Fireforger's Puzzleknot $0.09 2 · Artifact When this artifact enters, it deals 1 damage to any target. Prophetic Bolt $0.10 3UR · Instant Prophetic Bolt deals 4 damage to any target. Roil Eruption $0.11 1R · Sorcery Kicker {5} Plasma Bolt $0.13 R · Sorcery Plasma Bolt deals 2 damage to any target. Precision Bolt $0.14 2R · Sorcery Precision Bolt deals 3 damage to any target. Scent of Cinder $0.14 1R · Sorcery Reveal any number of red cards in your hand. Light Up the Night $0.15 XR · Sorcery Light Up the Night deals X damage to any target. Boltfire $0.16 R · Sorcery Boltfire deals 2 damage to any target. Rift Bolt $0.20 2R · Sorcery Rift Bolt deals 3 damage to any target. Searing Spear $0.24 1R · Instant Searing Spear deals 3 damage to any target. Bombardment $0.28 R · Sorcery Until end of turn, cards you own that aren't on the battlefield lose all card types, costs, names... Fire Whip $0.28 1R · Aura Enchant creature you control Burst Lightning $0.31 R · Instant Kicker {4} Zuko's Offense $0.35 R · Sorcery Zuko's Offense deals 2 damage to any target. Guerrilla Tactics $0.49 1R · Instant Guerrilla Tactics deals 2 damage to any target. Banefire $0.60 XR · Sorcery Banefire deals X damage to any target.