34 cards where the cards have an ETB effect and the text includes “fights”

Agatha's Champion (Wilds of Eldraine #160)
Aggressive Biomancy (Modern Horizons 3 Commander #69)
Apex Altisaur (The Lost Caverns of Ixalan Commander #232)
Ayula, Queen Among Bears (Modern Horizons #155)
Bloodrage Alpha (Alchemy: Innistrad #36)
Boxing Ring (New Capenna Commander #91)
Bridgeworks Battle // Tanglespan Bridgeworks (Modern Horizons 3 #249)
Bridgeworks Battle // Tanglespan Bridgeworks (Modern Horizons 3 #249)
Faunsbane Troll (Wilds of Eldraine #203)
Favored Enemy (Alchemy Horizons: Baldur's Gate #66)
Fight the _____ Fight (Unfinity #138)
Foe-Razer Regent (Dragons of Tarkir #187)
Gruul Ragebeast (Gatecrash #170)
Gut, Fanatical Priestess (Alchemy Horizons: Baldur's Gate #13)
Invasion of Muraganda // Primordial Plasm (March of the Machine #192)
Invasion of Muraganda // Primordial Plasm (March of the Machine #192)
Khalni Ambush // Khalni Territory (Zendikar Rising #192)
Khalni Ambush // Khalni Territory (Zendikar Rising #192)
Kogla and Yidaro (March of the Machine #244)
Kogla, the Titan Ape (Ikoria: Lair of Behemoths #162)
Markov Enforcer (Crimson Vow Commander #26)
Mawloc (Warhammer 40,000 Commander #133)
Mythos of Illuna (Ikoria: Lair of Behemoths #58)
Pheres-Band Brawler (Theros Beyond Death #193)
Polukranos, Unchained (Theros Beyond Death #224)
Ravager Wurm (Ravnica Allegiance #200)
Sawblade Slinger (Innistrad: Crimson Vow #217)
Scab-Clan Giant (Double Masters 2022 #272)
Slaying Mantis (Unsanctioned #69)
Territorial Allosaurus (Dominaria #184)
Thorn Mammoth (Throne of Eldraine #323)
Tolsimir, Friend to Wolves (War of the Spark #224)
Tovolar's Huntmaster // Tovolar's Packleader (Innistrad: Midnight Hunt #204)
Tovolar's Huntmaster // Tovolar's Packleader (Innistrad: Midnight Hunt #204)
Voracious Hydra (Core Set 2020 #200)
Vorinclex // The Grand Evolution (March of the Machine #213)
Vorinclex // The Grand Evolution (March of the Machine #213)
Warbriar Blessing (Theros Beyond Death #204)
Wicked Wolf (Throne of Eldraine #181)

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