Herald of Anguish 
Creature — Demon
$0.38 #11568 0.29 9.7 years
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for 
.)
.)Flying
At the beginning of your end step, each opponent discards a card.
, Sacrifice an artifact: Target creature gets -2/-2 until end of turn.Click a line or tag to filter
Cards similar to Herald of Anguish 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.
Battle at the Bridge94%
$0.28↓#118110.06↓9.7 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Wind-Kin Raiders92%
$0.04↓#31302↓0.00↓9.7 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Sweatworks Brawler92%
$0.04↓#29858↓0.12↓9.7 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Enraged Giant92%
$0.05↓#29191↓0.309.7 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Foundry Assembler92%
$0.13↓#23704↓0.05↓9.7 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Barricade Breaker90%
$0.11↓#20318↓0.11↓9.7 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Bastion Inventor90%
$0.03↓#28814↓0.06↓9.7 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Maverick Thopterist90%
$0.11↓#19037↓0.249.7 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Universal Surveillance88%
$0.20↓#5351↑0.06↓4.7 years↓
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Reverse Engineer88%
$0.18↓#8030↑0.12↓9.8 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Bottle-Cap Blast88%
$1.86↑#4053↑0.362.6 years↓
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Freejam Regent88%
$0.16↓#26010↓0.00↓9.7 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Sly Requisitioner87%
$0.10↓#18507↓0.15↓9.7 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Arc Reactor86%
$0.92↑#5591↑0.280.3 years↓
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Fen Hauler86%
$0.05↓#29250↓0.06↓9.7 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Organic Extinction85%
$0.33↓#1314↑0.48↑4.7 years↓
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Metallic Rebuke85%
$0.25↓#108370.44↑9.7 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Synth Infiltrator85%
$0.29↓#9035↑0.06↓2.6 years↓
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Ironheart, Clever Champion83%
$0.37↓#99900.260.3 years↓
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."+1 more matching line
Whir of Invention83%
$5.49↑#1336↑0.50↑9.7 years
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."