25 cards where the text includes “trample” and the colors is U

Augmenter Pugilist // Echoing Equation (Strixhaven: School of Mages #147)
Augmenter Pugilist // Echoing Equation (Strixhaven: School of Mages #147)
Behold the Unspeakable // Vision of the Unspeakable (Kamigawa: Neon Dynasty #48)
Behold the Unspeakable // Vision of the Unspeakable (Kamigawa: Neon Dynasty #48)
Bringer of the Blue Dawn (Fifth Dawn #26)
Cetavolver (Apocalypse #21)
Deep Spawn (Masters Edition II #45)
Escaped Shapeshifter (Tempest #62)
Giant Shark (The Dark #29)
Glacial Crasher (Magic 2015 #57)
Greater Morphling (Unhinged #34)
Inkwell Leviathan (Double Masters #55)
Invasion of Segovia // Caetus, Sea Tyrant of Segovia (March of the Machine #63)
Invasion of Segovia // Caetus, Sea Tyrant of Segovia (March of the Machine #63)
Jokulmorder (Coldsnap #37)
Leviathan (Time Spiral Timeshifted #23)
Ludevic's Test Subject // Ludevic's Abomination (Innistrad #64)
Ludevic's Test Subject // Ludevic's Abomination (Innistrad #64)
Phantasmal Dreadmaw (Modern Horizons 2 #55)
Polar Kraken (Masters Edition #44)
Reservoir Kraken (Streets of New Capenna #56)
Rona, Herald of Invasion // Rona, Tolarian Obliterator (March of the Machine #75)
Rona, Herald of Invasion // Rona, Tolarian Obliterator (March of the Machine #75)
Silver Erne (Ice Age #98)
Skaab Goliath (Commander Legends #97)
Taniwha (Mirage #95)
The Indomitable (The Lost Caverns of Ixalan Commander #75)
The Unspeakable (Duel Decks: Mind vs. Might #13)
Trench Gorger (Commander 2011 #65)
Walking Sponge (Urza's Legacy #47)

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