Sunderflock 
Creature — Elemental
$1.41 #6219 0.00 0.6 years
This spell costs 
less to cast, where X is the greatest mana value among Elementals you control.
less to cast, where X is the greatest mana value among Elementals you control.Flying
When this creature enters, if you cast it, return all non-Elemental creatures to their owners' hands.
Click a line or tag to filter
Cards similar to Sunderflock 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.
Spellbound Dragon72%
$0.34↓#20768↓0.61↑17.3 years↑
"Flying"
Cresting Mosasaurus70%
$5.76↑#11015↓0.82↑2.8 years↑
"When this creature enters, if you cast it, return each non-Dinosaur creature to its owner's hand."
+1 more matching line
Hoard-Smelter Dragon70%
$0.17↓#9544↓0.0615.9 years↑
"Flying"