Demon's Herald 
Creature — Human Wizard
$0.12 #28123 0.25 17.9 years
, 
, Sacrifice a blue creature, a black creature, and a red creature: Search your library for a card named Prince of Thralls, put it onto the battlefield, then shuffle.Click a line or tag to filter
Cards similar to Demon's Herald expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Sphinx's Herald92%
$0.04↓#286160.00↓17.9 years
"
, , Sacrifice a white creature, a blue creature, and a black creature: Search your library for a card named Sphinx Sovereign, put it onto the battlefield, then shuffle."
, , Sacrifice a white creature, a blue creature, and a black creature: Search your library for a card named Sphinx Sovereign, put it onto the battlefield, then shuffle."
Dragon's Herald91%
$0.08↓#279240.00↓17.9 years
"
, , Sacrifice a black creature, a red creature, and a green creature: Search your library for a card named Hellkite Overlord, put it onto the battlefield, then shuffle."
, , Sacrifice a black creature, a red creature, and a green creature: Search your library for a card named Hellkite Overlord, put it onto the battlefield, then shuffle."
Behemoth's Herald84%
$0.13↑#270770.36↑17.9 years
"
, , Sacrifice a red creature, a green creature, and a white creature: Search your library for a card named Godsire, put it onto the battlefield, then shuffle."
, , Sacrifice a red creature, a green creature, and a white creature: Search your library for a card named Godsire, put it onto the battlefield, then shuffle."
Angel's Herald82%
$0.21↑#277630.1817.9 years
"
, , Sacrifice a green creature, a white creature, and a blue creature: Search your library for a card named Empyrial Archangel, put it onto the battlefield, then shuffle."
, , Sacrifice a green creature, a white creature, and a blue creature: Search your library for a card named Empyrial Archangel, put it onto the battlefield, then shuffle."
God-Pharaoh's Faithful70%
$0.18↑#20827↑0.00↓9.1 years↓
"Whenever you cast a blue, black, or red spell, you gain 1 life."