29 cards where the mana cost is equal to {R} and the text includes “1 damage” and the card types exclude “creature”

Barrage of Expendables (Jumpstart #292)
Blazing Volley (Ikoria: Lair of Behemoths #107)
Chaos Charm (Mirage #163)
Crackling Club (Torment #93)
Death Spark (Masters Edition II #123)
Dizzying Gaze (Exodus #81)
Dual Shot (Ixalan #141)
Electrickery (Return to Ravnica #93)
End the Festivities (Innistrad: Crimson Vow #155)
Engulfing Flames (Odyssey #191)
Flame Jab (Eternal Masters #131)
Geistflame (Duel Decks: Sorin vs. Tibalt #61)
Lava Dart (Modern Horizons #134)
Lithomantic Barrage (March of the Machine #152)
Mana Clash (Ninth Edition #203)
Needle Drop (Lorwyn #186)
Rile (Forgotten Realms Commander #136)
Scorching Spear (Starter 1999 #116)
Scorching Winds (Portal #149)
Searing Touch (Tempest Remastered #155)
Shower of Sparks (Duel Decks: Heroes vs. Monsters #61)
Singe (Planeshift #71)
Spark Jolt (Theros #140)
Spark Spray (Dominaria Remastered #141)
Spikefield Hazard // Spikefield Cave (Zendikar Rising #166)
Spikefield Hazard // Spikefield Cave (Zendikar Rising #166)
Tectonic Hazard (The Lost Caverns of Ixalan #169)
Tormentor's Helm (Kaldheim #155)
Tremor (Eighth Edition #228)
Winter Sky (Homelands #80)

The arc of my blade has carved a path of light to the end of these results.