Conduit of Ruin 
Creature — Eldrazi
$5.97 #2337 0.48 11.0 years
When you cast this spell, you may search your library for a colorless creature card with mana value 7 or greater, reveal it, then shuffle and put that card on top.
The first creature spell you cast each turn costs 
less to cast.
less to cast.Click a line or tag to filter
Cards similar to Conduit of Ruin 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.
Sanctum of Ugin82%
$2.07↓#2884↓0.4611.0 years
"Whenever you cast a colorless spell with mana value 7 or greater, you may sacrifice this land. If you do, search your library for a colorless creature card, reveal it, put it into your hand, then shuffle."
Planar Gate78%
$74.69↑#21434↓0.3832.4 years↑
"Creature spells you cast cost less to cast."
less to cast."
Eye of Ugin77%
$30.48↑#2921↓0.96↑16.7 years↑
"Colorless Eldrazi spells you cast cost less to cast."
less to cast."+1 more matching line
Honest Rutstein76%
$0.38↓#1855↑0.16↓2.5 years↓
"Creature spells you cast cost 
less to cast."
less to cast."
Krosan Drover76%
$0.18↓#13981↓0.15↓23.4 years↑
"Creature spells you cast with mana value 6 or greater cost less to cast."
less to cast."
Shadow in the Warp74%
$16.28↑#3603↓0.454.0 years↓
"The first creature spell you cast each turn costs less to cast."
less to cast."
Heartless Summoning74%
$1.63↓#26770.37↓15.1 years↑
"Creature spells you cast cost less to cast."
less to cast."
Marauding Raptor73%
$0.85↓#3049↓0.19↓7.3 years↓
"Creature spells you cast cost less to cast."
less to cast."
Fierce Empath73%
$0.13↓#21650.24↓23.4 years↑
"When this creature enters, you may search your library for a creature card with mana value 6 or greater, reveal it, put it into your hand, then shuffle."
Sylvan Tutor72%
$50.15↑#27380.71↑29.5 years↑
"Search your library for a creature card, reveal it, then shuffle and put that card on top."
Worldly Tutor72%
$26.14↑#172↑1.09↑30.0 years↑
"Search your library for a creature card, reveal it, then shuffle and put the card on top."
The Sibsig Ceremony71%
$0.35↓#8842↓0.12↓1.5 years↓
"Creature spells you cast cost less to cast."
less to cast."
Radagast of Rhosgobel71%
$2.37↓#4221↓0.510.2 years↓
"The first creature spell you cast each turn costs less to cast and can be cast as though it had flash."
less to cast and can be cast as though it had flash."
Herald of Kozilek71%
$0.36↓#6409↓0.29↓11.0 years
"Colorless spells you cast cost less to cast."
less to cast."
Herald's Horn70%
$2.80↓#151↑0.24↓9.2 years↓
"Creature spells you cast of the chosen type cost less to cast."
less to cast."
Rocco, Cabaretti Caterer70%
$0.20↓#6072↓0.65↑4.5 years↓
"When this card enters, if you cast it, you may search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle."
Duskwatch Recruiter // Krallenhorde Howler70%
$0.32↓#5988↓0.21↓10.5 years
"Creature spells you cast cost less to cast."
less to cast."