27 cards where the text includes “gains” and the text includes “double strike” and the mana value < 3

Assault Strobe (Scars of Mirrodin #82)
Boros Charm (Foundations #721)
Buccaneer's Bravado (Rivals of Ixalan #96)
Cabaretti Initiate (Streets of New Capenna #137)
Case of the Shattered Pact (Murders at Karlov Manor #1)
Chandra's Pyreling (Core Set 2021 #138)
Critical Hit (Adventures in the Forgotten Realms #137)
Double Cleave (Ultimate Masters #214)
Hat Trick (Unfinity #13)
Kellan, Planar Trailblazer (Foundations #91)
Manifold Mouse (Bloomburrow #143)
Paladin Class (Adventures in the Forgotten Realms #29)
Picnic Ruiner // Stolen Goodies (Wilds of Eldraine #232)
Priest of Possibility (Alchemy: Dominaria #2)
Psychotic Fury (Dissension #68)
Quick Draw (Outlaws of Thunder Junction #138)
Raking Claws (Ikoria: Lair of Behemoths #131)
Reyav, Master Smith (Commander Legends #290)
Rustler Rampage (Outlaws of Thunder Junction #27)
Sunhome, Fortress of the Legion (Outlaws of Thunder Junction Commander #324)
Temur Battle Rage (Commander Masters #264)
Thunderous Orator (Strixhaven: School of Mages #35)
Turbo-Thwacking Auto-Hammer (Unstable #209)
Twinferno (Dominaria United #149)
Urdnan, Dromoka Warrior (Foundations Jumpstart #34)
Veteran Cathar (Shadows over Innistrad #238)
Violent Urge (Duskmourn: House of Horror #164)

The message was clear to Sorin—time to search for something else.