Dream Chisel 
Artifact
$3.84 #13566 0.14 23.9 years
Face-down creature spells you cast cost 
less to cast.
less to cast.Click a line or tag to filter
Cards similar to Dream Chisel 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.
Obscuring Aether96%
$0.17↓#111320.1211.4 years↓
"Face-down creature spells you cast cost less to cast."
less to cast."
Kadena, Slinking Sorcerer94%
$0.39↓#120520.41↑7.0 years↓
"The first face-down creature spell you cast each turn costs 
less to cast."
less to cast."
Goblin Maskmaker90%
$0.04↓#21472↓0.25↑2.6 years↓
"Whenever this creature attacks, face-down spells you cast this turn cost less to cast."
less to cast."
Panoptic Projektor90%
$0.30↓#9031↑0.62↑2.6 years↓
"
: The next face-down creature spell you cast this turn costs less to cast."
: The next face-down creature spell you cast this turn costs less to cast."
Stone Calendar75%
$14.67↑#20270↓0.48↑32.1 years↑
"Spells you cast cost less to cast."
less to cast."
Memory Crystal71%
$2.14↓#23969↓0.60↑28.2 years↑
"Buyback costs cost less."
less."