28 cards where the illustration contains “dock”

Disdainful Stroke (Kaldheim #54)
Drownyard Amalgam (Innistrad: Midnight Hunt #50)
Dynaheir, Invoker Adept (Commander Legends: Battle for Baldur's Gate #532)
Highland Lake (Shadows over Innistrad #277)
Instigator (Mercadian Masques #140)
Island (European Land Program #7)
Kappa Tech-Wrecker (Kamigawa: Neon Dynasty #198)
Merfolk Spy (Magic 2011 #66)
Misstep (Mercadian Masques #88)
Nameless One (Onslaught #100)
Nebelgast Intruder (Innistrad: Midnight Hunt #64)
Nebelgast Intruder (Innistrad: Double Feature #64)
Port Inspector (Mercadian Masques #90)
Port Town (Tales of Middle-earth Commander #323)
Repercussion (Urza's Destiny #95)
Rishadan Port (Mercadian Masques #324)
Sentry of the Underworld (Theros #202)
Startle (Innistrad: Double Feature #78)
Swamp (Adventures in the Forgotten Realms #272)
Swamp (Fate Reforged #181)
Temple of Enlightenment (Theros Beyond Death #246)
Temple of Silence (Core Set 2020 #256)
Wash Away (Innistrad: Crimson Vow #87)
Waterfront District (Streets of New Capenna #259)
Water Weird (Alchemy Horizons: Baldur's Gate #41)
Wharf Infiltrator (Eldritch Moon #80)
Willbender (Legions #58)
Words of Wind (Onslaught #122)

This search is finished. Now the real work can begin.