8 cards where the name includes “island-”

Island (Foundations #274)
Island Fish Jasconius (Fourth Edition #78)
Island of Wak-Wak (Masters Edition #176)
Island Sanctuary (Masters Edition IV #15)
Moonring Island (Shadowmoor #276)
Snow-Covered Island (Kaldheim #278)
Tropical Island (Vintage Masters #321)
Volcanic Island (Vintage Masters #324)

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