Roiling Dragonstorm 
Enchantment
$0.21 #5367 0.06 1.5 years
When this enchantment enters, draw two cards, then discard a card.
When a Dragon you control enters, return this enchantment to its owner's hand.
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Cards similar to Roiling Dragonstorm expected a card that isn't here?
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Teeming Dragonstorm96%
$0.19↓#16990↓0.121.5 years
"When a Dragon you control enters, return this enchantment to its owner's hand."
Breaching Dragonstorm90%
$0.24↑#3812↑0.111.5 years
"When a Dragon you control enters, return this enchantment to its owner's hand."
Encroaching Dragonstorm90%
$0.18↓#2403↑0.131.5 years
"When a Dragon you control enters, return this enchantment to its owner's hand."
Corroding Dragonstorm88%
$0.26↑#10677↓0.121.5 years
"When a Dragon you control enters, return this enchantment to its owner's hand."
Catalog88%
$0.07↓#17013↓0.0028.0 years↑
"Draw two cards, then discard a card."
Rousing Read86%
$0.14↓#19624↓0.006.3 years↑
"When this Aura enters, draw two cards, then discard a card."
Master of Winds84%
$0.21#20747↓0.126.1 years↑
"When this creature enters, draw two cards, then discard a card."
Racers' Scoreboard82%
$0.26↑#63830.001.7 years
"When this artifact enters, draw two cards, then discard a card."
Uthros Scanship80%
$0.26↑#14285↓0.001.2 years
"When this Spacecraft enters, draw two cards, then discard a card."
Snow Day79%
$0.14↓#24656↓0.155.5 years↑
"Draw two cards, then discard a card."
Trial of Knowledge78%
$0.17↓#22228↓0.009.5 years↑
"When this enchantment enters, draw three cards, then discard a card."
+1 more matching line
Artificer's Epiphany78%
$0.09↓#14307↓0.0711.3 years↑
"Draw two cards. If you control no artifacts, discard a card."
Confusticate and Bebother78%
$0.22↑#11318↓0.100.2 years↓
"• Draw two cards, then discard a card."
Bazaar Trademage76%
$0.15↓#23781↓0.24↑7.4 years↑
"When this creature enters, draw two cards, then discard three cards."
Bellowing Crier76%
$0.19↓#9070↓0.002.2 years
"When this creature enters, draw a card, then discard a card."
Merfolk Traders76%
$0.12↓#28346↓0.1329.4 years↑
"When this creature enters, draw a card, then discard a card."
Elite Instructor76%
$0.05↓#26141↓0.006.7 years↑
"When this creature enters, draw a card, then discard a card."
Vodalian Merchant76%
$0.22↑#29354↓0.0026.0 years↑
"When this creature enters, draw a card, then discard a card."
The Bath Song76%
$0.27↑#49830.31↑3.3 years↑
"Draw two cards, then discard a card."
Timid Drake76%
$0.13↓#31982↓0.28↑29.4 years↑
"When another creature enters, return this creature to its owner's hand."