Stinging Lionfish 
Enchantment Creature — Fish
$0.14 #14319 0.18 6.7 years
Whenever you cast your first spell during each opponent's turn, you may tap or untap target nonland permanent.
Click a line or tag to filter
Cards similar to Stinging Lionfish 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.
Component Collector88%
$0.12↓#25836↓0.29↑5.1 years↓
"Whenever day becomes night or night becomes day, you may tap or untap target nonland permanent."
Giant-Sized Flying Ant84%
$0.10↓#22292↓0.230.3 years↓
"• Untap target nonland permanent."
Gadwick, the Wizened78%
$0.35↑#6651↑0.76↑7.0 years
"Whenever you cast a blue spell, tap target nonland permanent an opponent controls."
Thistledown Players76%
$0.23↑#128740.00↓2.2 years↓
"Whenever this creature attacks, untap target nonland permanent."
Unstoppable Plan74%
$1.43↑#1776↑0.66↑1.7 years↓
"At the beginning of your end step, untap all nonland permanents you control."