5 cards where the colors is W and the text includes “search” and the text includes “creature card”

General Tazri (Oath of the Gatewatch #19)
Ranger-Captain of Eos (Modern Horizons #21)
Ranger of Eos (Modern Masters 2017 #19)
Recruiter of the Guard (Conspiracy: Take the Crown #22)
War of the Last Alliance (The Lord of the Rings: Tales of Middle-earth #36)

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