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%
$0.28↑ #1344↑ 0.2211.4 years↑
"Dragon spells you cast cost
less to cast."
cost-reducer-creature, typal-dragon, noncreature-typal
?
Dragonspeaker Shaman 90%
$1.98↑ #1312↑ 0.2623.3 years↑
"Dragon spells you cast cost
less to cast."
cost-reducer-creature, typal-dragon, noncreature-typal
?
Sarkhan, Soul Aflame 80%
$0.75↑ #2062↑ 0.273.3 years
"Dragon spells you cast cost
less to cast."
cost-reducer-creature, typal-dragon, noncreature-typal
?
Nogi, Draco-Zealot 79%
$0.61↑ #4767↑ 0.43↑ 3.9 years
"Dragon spells you cast cost
less to cast."
cost-reducer-creature, typal-dragon, noncreature-typal
?
The Ur-Dragon 78%
$35.73↑ #2622↑ 1.97↑ 9.0 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
?
Planar Gate 74%
$77.60↑ #21320↓ 0.68↑ 32.3 years↑
"Creature spells you cast cost
less to cast."
cost-reducer-creature, cost-reducer
?
Draconic Lore 72%
$0.19↓ #7822 0.03↓ 4.2 years
"This spell costs
less to cast if you control a Dragon."
typal-dragon, noncreature-typal, typal-creature
?
Honest Rutstein 70%
$0.39↑ #1787↑ 0.192.4 years↓
"Creature spells you cast cost
less to cast."
cost-reducer-creature, cost-reducer
?
Kinjalli's Caller 70%
$0.29↑ #6320↑ 0.05↓ 8.9 years↑
"Dinosaur spells you cast cost
less to cast."
cost-reducer-creature, noncreature-typal, cost-reducer
?
Knight of the Stampede 70%
$0.36↑ #7040↑ 0.07↓ 8.6 years↑
"Dinosaur spells you cast cost
less to cast."
cost-reducer-creature, noncreature-typal, cost-reducer