Ironheart, Clever Champion 
Legendary Artifact Creature — Human Hero
$0.37 #9990 0.26 0.3 years
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for 
.)
.)Flying
Noncreature spells you cast have improvise.
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Cards similar to Ironheart, Clever Champion 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.
Wind-Kin Raiders94%
$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 Brawler94%
$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 Giant93%
$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 Assembler93%
$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 Breaker92%
$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 Inventor91%
$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 Surveillance90%
$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 Engineer90%
$0.18↓#80300.12↓9.8 years↑
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
Battle at the Bridge88%
$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 ."
."
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 ."
."
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 ."
."
Sly Requisitioner88%
$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 ."
."
Fen Hauler87%
$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 ."
."
Arc Reactor87%
$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 ."
."
Inspiring Statuary86%
$0.22↓#983↑0.329.7 years↑
"Nonartifact spells you cast have improvise."
Synth Infiltrator86%
$0.29↓#90350.06↓2.6 years↑
"Improvise Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for ."
."
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 ."
."
Whir of Invention84%
$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 ."
."