Foul-Tongue Invocation 
Instant
$0.15 #23936 0.10 11.6 years
As an additional cost to cast this spell, you may reveal a Dragon card from your hand.
Target player sacrifices a creature of their choice. If you revealed a Dragon card or controlled a Dragon as you cast this spell, you gain 4 life.
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Cards similar to Foul-Tongue Invocation expected a card that isn't here?
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Scaleguard Sentinels98%
$0.10↓#29226↓0.00↓11.6 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%
$0.13↓#14587↑0.0611.8 years
"As an additional cost to cast this spell, you may reveal a Dragon card from your hand."
+1 more matching line
Draconic Roar96%
$0.12↓#197290.1711.6 years
"As an additional cost to cast this spell, you may reveal a Dragon card from your hand."
+1 more matching line
Dragonlord's Prerogative96%
$0.24↑#201330.0711.6 years
"As an additional cost to cast this spell, you may reveal a Dragon card from your hand."
+1 more matching line
Silumgar's Scorn94%
$0.27↑#13403↑0.26↑11.6 years
"As an additional cost to cast this spell, you may reveal a Dragon card from your hand."
+1 more matching line
Dragon's Fire94%
$0.27↑#7178↑0.145.2 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
Molten Exhale82%
$0.21↑#13402↑0.00↓1.5 years↓
"You may cast this spell as though it had flash if you behold a Dragon as an additional cost to cast it."
Temple of the Dragon Queen82%
$0.34↑#2563↑0.105.2 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."
Caustic Exhale81%
$0.12↓#16688↑0.27↑1.5 years↓
"As an additional cost to cast this spell, behold a Dragon or pay 
."
."
Dragon's Disciple80%
$0.27↑#194940.31↑5.2 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."
Osseous Exhale80%
$0.18↑#17139↑0.141.5 years↓
"As an additional cost to cast this spell, you may behold a Dragon."
+1 more matching line
Dispelling Exhale79%
$0.18↑#8878↑0.00↓1.5 years↓
"As an additional cost to cast this spell, you may behold a Dragon."
Piercing Exhale78%
$0.25↑#13994↑0.121.5 years↓
"As an additional cost to cast this spell, you may behold a Dragon."
Dracogenesis78%
$11.88↑#2217↑1.09↑1.5 years↓
"You may cast Dragon spells without paying their mana costs."
Draconic Lore78%
$0.20↑#7945↑0.24↑4.4 years↓
"This spell costs less to cast if you control a Dragon."
less to cast if you control a Dragon."
Dragonspeaker Shaman75%
$0.36↑#1313↑0.29↑23.4 years↑
"Dragon spells you cast cost less to cast."
less to cast."
Dragonlord's Servant75%
$0.19↑#1346↑0.21↑11.6 years
"Dragon spells you cast cost less to cast."
less to cast."
Kargan Dragonrider74%
$0.06↓#252260.00↓8.3 years↓
"As long as you control a Dragon, this creature has flying."
Monstrous Emergence72%
$0.23↑#11553↑0.062.1 years↓
"As an additional cost to cast this spell, choose a creature you control or reveal a creature card from your hand."
Korlessa, Scale Singer72%
$0.21↑#3782↑0.174.4 years↓
"You may cast Dragon spells from the top of your library."