Explosive Prodigy {1}{R}
Creature — Elemental Sorcerer
Vivid — When this creature enters, it deals X damage to target creature an opponent controls, where X is the number of colors among permanents you control.
click a line to search just that ability, click more to combine them
Cards that do something similar 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.
Firefist Adept 88%
$0.18#23473
"When this creature enters, it deals X damage to target creature an opponent controls, where X is the number of Wizards you control."
Cyclops Electromancer 84%
$0.09#22063
"When this creature enters, it deals X damage to target creature an opponent controls, where X is the number of instant and sorcery cards in your graveyard."
Warfire Javelineer 84%
$0.20#25637
"When this creature enters, it deals X damage to target creature an opponent controls, where X is the number of instant and sorcery cards in your graveyard."
Nova Hellkite 81%
$0.33#12253
"When this creature enters, it deals 1 damage to target creature an opponent controls."