7 cards where the illustration contains “blood-magic”

Bankrupt in Blood (Ravnica Allegiance #62)
Bloodforged Battle-Axe (Commander 2017 #50)
Blood Funnel (Ravnica: City of Guilds #77)
Blood Rites (Commander 2013 #101)
Call for Blood (Betrayers of Kamigawa #63)
Drana and Linvala (March of the Machine #222)
Necromantic Thirst (Ravnica: City of Guilds #97)

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