When this creature enters, draw a card if you control a creature with a counter on it. If you don't draw a card this way, put a +1/+1 counter on this creature.
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.
Chronicler of Heroes92%
$0.04↓#24634↓0.11↑13.1 years↑
"When this creature enters, draw a card if you control a creature with a +1/+1 counter on it."
cantrip, counters-matter, pure-draw
Zegana, Utopian Speaker88%
$0.27↑#5520↑0.077.7 years↑
"When this card enters, if you control another creature with a +1/+1 counter on it, draw a card."