District Mascot {G}
Creature — Dog Mount
This creature enters with a +1/+1 counter on it.
{1}{G}, Remove two +1/+1 counters from this creature: Destroy target artifact.
Whenever this creature attacks while saddled, put a +1/+1 counter on it.
Saddle 1
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.
Giant Beaver 89%
$0.14#18275
"Whenever this creature attacks while saddled, put a +1/+1 counter on target creature that saddled it this turn."
+1 more matching line
Gnoll Hunter 88%
$0.12#22961
"Whenever this creature attacks, if you attacked with creatures with total power 6 or greater this combat, put a +1/+1 counter on this creature."
Resplendent Griffin 85%
$0.09#28236
"Whenever this creature attacks, if you have the city's blessing, put a +1/+1 counter on it."
Bulwark Ox 83%
$0.36#7273
"Whenever this creature attacks while saddled, put a +1/+1 counter on target creature."
+1 more matching line
Congregation Gryff 80%
$0.16#17643
"Whenever this creature attacks while saddled, it gets +X/+X until end of turn, where X is the number of Mounts you control."
+1 more matching line
Venomsac Lagac 80%
$0.13#19031
"Whenever this creature attacks while saddled, it gets +0/+3 until end of turn."
+1 more matching line