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.
?
Dragonlord's Servant 90%
$0.19↓ #1346↑ 0.2111.6 years↑
"Dragon spells you cast cost
less to cast."
cost-reducer-creature, typal-dragon, noncreature-typal
?
Dragonspeaker Shaman 90%
$0.36↑ #1313↑ 0.2923.4 years↑
"Dragon spells you cast cost
less to cast."
cost-reducer-creature, typal-dragon, noncreature-typal
?
Sarkhan, Soul Aflame 80%
$0.80↑ #2074↑ 0.343.4 years
"Dragon spells you cast cost
less to cast."
cost-reducer-creature, typal-dragon, noncreature-typal
?
The Ur-Dragon 79%
$34.67↑ #2673↑ 1.99↑ 9.2 years↑
"As long as this card is in the command zone or on the battlefield, other Dragon spells you cast cost
less to cast."
cost-reducer-creature, typal-dragon, noncreature-typal
?
Nogi, Draco-Zealot 79%
$0.34↑ #4555↑ 0.00↓ 4.0 years
"Dragon spells you cast cost
less to cast."
cost-reducer-creature, typal-dragon, noncreature-typal
?
Planar Gate 74%
$74.69↑ #21434↓ 0.3832.4 years↑
"Creature spells you cast cost
less to cast."
cost-reducer-creature, cost-reducer
?
Draconic Lore 72%
$0.20 #7945 0.244.4 years
"This spell costs
less to cast if you control a Dragon."
typal-dragon, noncreature-typal, typal-creature
?
Honest Rutstein 70%
$0.38↑ #1855↑ 0.16↓ 2.5 years↓
"Creature spells you cast cost
less to cast."
cost-reducer-creature, cost-reducer
?
Kinjalli's Caller 70%
$0.27↑ #6411↑ 0.00↓ 9.1 years↑
"Dinosaur spells you cast cost
less to cast."
cost-reducer-creature, noncreature-typal, cost-reducer
?
Knight of the Stampede 70%
$0.32↑ #7166↑ 0.44↑ 8.8 years↑
"Dinosaur spells you cast cost
less to cast."
cost-reducer-creature, noncreature-typal, cost-reducer