54 cards where the text includes “{t}: ~ deals 1 damage to any target” and the color identity ≤ RU

Acorn Catapult (Commander 2011 #241)
Anaba Shaman (Ninth Edition #172)
Apprentice Sorcerer (Portal Second Age #32)
Arcane Teachings (Tenth Edition #188)
Ballista Watcher // Ballista Wielder (Innistrad: Crimson Vow #143)
Ballista Watcher // Ballista Wielder (Innistrad: Crimson Vow #143)
Barbed Field (Prophecy #83)
Brimstone Mage (Rise of the Eldrazi #137)
Capricious Sorcerer (Portal #43)
Chainflinger (Odyssey #181)
Cunning Sparkmage (Worldwake #79)
Embermage Goblin (Onslaught #200)
Endbringer (Commander Masters #803)
Fallen Ferromancer (New Phyrexia #82)
Fireslinger (Duel Decks Anthology: Jace vs. Chandra #36)
Fire Whip (Time Spiral Timeshifted #63)
Flame Fusillade (Ravnica: City of Guilds #123)
Fledgling Mawcor (Duel Decks Anthology: Jace vs. Chandra #10)
Frostwielder (Champions of Kamigawa #167)
Gelectrode (Duel Decks: Izzet vs. Golgari #5)
Goblin Dynamo (Legions #97)
Goblin Sharpshooter (Commander 2013 #111)
Granite Shard (Mirrodin #182)
Hermetic Study (Dominaria Remastered #53)
Hypervolt Grasp (Guildpact #67)
Jeska, Warrior Adept (Judgment #93)
Keldon Megaliths (Duel Decks Anthology: Jace vs. Chandra #58)
Koth of the Hammer (Duel Decks: Venser vs. Koth #44)
Lightning Prowess (Avacyn Restored #145)
Lightning Volley (Born of the Gods #101)
Mawcor (Tempest Remastered #59)
Pirate Ship (Time Spiral Timeshifted #28)
Power of Fire (Conspiracy #150)
Prodigal Pyromancer (Time Spiral Remastered #180)
Prodigal Sorcerer (Eternal Masters #67)
Psionic Gift (Odyssey #95)
Razorfin Hunter (Apocalypse #119)
Retributive Wand (Core Set 2020 #236)
Rod of Ruin (Magic 2014 #217)
Rootwater Hunter (Duel Decks: Merfolk vs. Goblins #16)
Staff of Nin (Commander Anthology Volume II #221)
Stinging Barrier (Mercadian Masques #107)
Suq'Ata Firewalker (Mirage #94)
Syr Carah, the Bold (Throne of Eldraine #145)
Thornbite Staff (Morningtide #145)
Thornwind Faeries (Commander Anthology #42)
Titan of Eternal Fire (Commander 2020 #163)
Vengeful Devil (Modern Horizons #152)
Viashino Fangtail (Ravnica: City of Guilds #148)
Viridian Longbow (Forgotten Realms Commander #221)
Vithian Stinger (Modern Masters 2017 #115)
Vulshok Sorcerer (Duel Decks: Venser vs. Koth #50)
Wolfhunter's Quiver (Dark Ascension #154)
Wu Longbowman (Masters Edition III #55)
Zuran Spellcaster (Masters Edition II #76)

In the blink of an eye, they strode from deep snow to the end of this search.