5 cards where the name includes “coralhelm”

Coral Helm (Masters Edition IV #194)
Coralhelm Chronicler (Zendikar Rising #54)
Coralhelm Commander (The Lost Caverns of Ixalan Commander #148)
Coralhelm Guide (Battlebond #116)
Retreat to Coralhelm (Duskmourn: House of Horror Commander #126)

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