Excavating Anurid 

Creature — Frog Beast
When this creature enters, you may sacrifice a land. If you do, draw a card.
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +1/+1 and has vigilance.
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.
Springbloom Druid 97%
$0.38#766
"When this creature enters, you may sacrifice a land. If you do, search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle."
Gnarled Sage 92%
$0.09#26765
"As long as you've drawn two or more cards this turn, this creature gets +0/+2 and has vigilance."
Spineseeker Centipede 88%
$0.16#13411
"This creature gets +1/+2 and has vigilance as long as there are four or more card types among cards in your graveyard."
Inquisitor's Ox 87%
$0.03#24797
"This creature gets +1/+0 and has vigilance as long as there are four or more card types among cards in your graveyard."