Dragonlord's Prerogative 
Instant
$0.25 #19835 0.44 11.4 years
As an additional cost to cast this spell, you may reveal a Dragon card from your hand.
If you revealed a Dragon card or controlled a Dragon as you cast this spell, this spell can't be countered.
Draw four cards.
Click a line or tag to filter
Cards similar to Dragonlord's Prerogative 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.
Scaleguard Sentinels96%
$0.09↓#28900↓0.00↓11.4 years
"As an additional cost to cast this spell, you may reveal a Dragon card from your hand."
+1 more matching line
Orator of Ojutai96%
$0.16↓#14324↑0.55↑11.7 years
"As an additional cost to cast this spell, you may reveal a Dragon card from your hand."
Foul-Tongue Invocation95%
$0.13↓#236360.29↓11.4 years
"As an additional cost to cast this spell, you may reveal a Dragon card from your hand."
+1 more matching line
Draconic Roar94%
$0.14↓#194520.13↓11.4 years
"As an additional cost to cast this spell, you may reveal a Dragon card from your hand."
+1 more matching line
Silumgar's Scorn90%
$0.22↓#13136↑0.21↓11.4 years
"As an additional cost to cast this spell, you may reveal a Dragon card from your hand."
+1 more matching line
Draconic Lore84%
$0.19↓#7822↑0.03↓4.2 years↓
"Draw three cards."
+1 more matching line
Tidings82%
$0.27↑#167280.00↓27.2 years↑
"Draw four cards."
Temple of the Dragon Queen81%
$0.32↑#2536↑0.07↓5.1 years↓
"As this land enters, you may reveal a Dragon card from your hand. This land enters tapped unless you revealed a Dragon card this way or you control a Dragon."
Dragon's Disciple78%
$0.20↓#192610.27↓5.1 years↓
"As this creature enters, you may reveal a Dragon card from your hand. If you do or if you control a Dragon, this creature enters with a +1/+1 counter on it."
+1 more matching line
Boon of the Wish-Giver78%
$0.18↓#7258↑0.00↓6.4 years↓
"Draw four cards."
Dragon's Fire78%
$0.26↑#7123↑0.00↓5.1 years↓
"As an additional cost to cast this spell, you may reveal a Dragon card from your hand or choose a Dragon you control."
+1 more matching line
Dracogenesis78%
$12.31↑#2300↑1.01↑1.4 years↓
"You may cast Dragon spells without paying their mana costs."
Concentrate76%
$0.18↓#11794↑0.33↓24.9 years↑
"Draw three cards."
Brilliant Plan76%
$0.07↓#214430.4327.3 years↑
"Draw three cards."
Jace's Ingenuity76%
$0.16↓#160380.3616.1 years↑
"Draw three cards."
Mind Spring76%
$0.25#5075↑0.10↓18.6 years↑
"Draw X cards."
Dispelling Exhale76%
$0.19↓#8963↑0.12↓1.4 years↓
"As an additional cost to cast this spell, you may behold a Dragon."
+1 more matching line
Molten Exhale76%
$0.17↓#13484↑0.10↓1.4 years↓
"You may cast this spell as though it had flash if you behold a Dragon as an additional cost to cast it."
Osseous Exhale75%
$0.18↓#171070.09↓1.4 years↓
"As an additional cost to cast this spell, you may behold a Dragon."
Dragonspeaker Shaman74%
$1.98↑#1312↑0.26↓23.3 years↑
"Dragon spells you cast cost 
less to cast."
less to cast."