Cryptic Trilobite {X}{X}
Creature — Trilobite
This creature enters with X +1/+1 counters on it.
Remove a +1/+1 counter from this creature: Add {C}{C}. Spend this mana only to activate abilities.
{1}, {T}: Put a +1/+1 counter on this creature.
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.
Swarm Shambler 100%
$0.31#14778
"{1}, {T}: Put a +1/+1 counter on this creature."
+1 more matching line
Hangarback Walker 100%
$0.26#1535
"{1}, {T}: Put a +1/+1 counter on this creature."
+1 more matching line
Ambitious Dragonborn 96%
$0.27#12402
"This creature enters with X +1/+1 counters on it, where X is the greatest power among creatures you control and creature cards in your graveyard."
Pyretic Hunter 92%
$0.12#31606
"This creature enters with X +1/+1 counters on it, where X is the highest number you noted for cards named this card."
Lurking Automaton 92%
$0.19#31604
"This creature enters with X +1/+1 counters on it, where X is the highest number you noted for cards named this card."
Realm Seekers 87%
$0.35#9270
"This creature enters with X +1/+1 counters on it, where X is the total number of cards in all players' hands."