28 cards where the lore includes “slug”

Catacomb Slug (Magic Origins #86)
Fervor (Magic 2013 #129)
Fludge, Gunk Guardian (Mystery Booster 2 #354)
Fumulus, the Infestation (Foundations Jumpstart #42)
Giant Slug (Chronicles #33)
Gluttonous Slug (Modern Horizons #93)
Goblin Lore (Tenth Edition #208)
Gunk Slug (Mystery Booster Playtest Cards 2021 #43)
Khalni Ambush // Khalni Territory (Zendikar Rising #192)
Khalni Ambush // Khalni Territory (Zendikar Rising #192)
Molder Slug (Mirrodin #125)
Molten Nursery (Battle for Zendikar #130)
Morkrut Necropod (Shadows over Innistrad #125)
Ohran Frostfang (Commander Masters #650)
Rocket-Powered Turbo Slug (Unhinged #87)
Run Ashore (Kaldheim #74)
Saddleback Lagac (Battlebond #211)
Slug (Innistrad: Crimson Vow Tokens #6)
Sluggishness (Urza's Legacy #92)
Spear Spewer (Ravnica Allegiance #117)
Spikefield Hazard // Spikefield Cave (Zendikar Rising #166)
Spikefield Hazard // Spikefield Cave (Zendikar Rising #166)
Spitfire Lagac (Foundations #208)
Spitting Slug (Time Spiral Timeshifted #85)
Steadfast Sentry (Core Set 2020 #40)
Swords to Plowshares (Strixhaven Mystical Archive #10)
The Gunky Runner (Unknown Event #RB04)
Thermopod (Coldsnap #100)
Toxrill, the Corrosive (Innistrad: Crimson Vow #132)
Valakut Predator (Battle for Zendikar #160)

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