Scurry Oak 
Creature — Treefolk
$2.37 #2259 0.54 5.2 years
Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)
Whenever one or more +1/+1 counters are put on this creature, you may create a 1/1 green Squirrel creature token.
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Cards similar to Scurry Oak 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.
Shambleshark98%
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$0.17↓#9910↓0.20↓13.6 years↑
"Evolve"
Gyre Sage96%
$0.96↓#835↑0.28↓13.6 years↑
"Evolve"
Simic Fluxmage96%
$0.08↓#23500↓0.06↓13.6 years↑
"Evolve"
Clinging Anemones96%
$0.10↓#23384↓0.29↓13.6 years↑
"Evolve"
Elusive Krasis96%
$0.15↓#16288↓0.25↓13.6 years↑
"Evolve"
Watchful Radstag95%
$1.45↓#6255↓0.27↓2.5 years↓
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Darwin, Adaptive Mutant94%
$0.27↓#26220↓0.00↓0.2 years↓
"Evolve"
Experiment One94%
$0.19↓#10483↓0.00↓13.7 years↑
"Evolve"
Adaptive Snapjaw93%
$0.14↓#22646↓0.00↓13.6 years↑
"Evolve"
Simic Manipulator92%
$0.40↓#12510↓0.76↑13.6 years↑
"Evolve"
Lonis, Genetics Expert91%
$5.49↑#11041↓0.502.5 years↓
"Evolve"
Herd Baloth90%
$0.35↓#4203↓0.32↓5.2 years
"Whenever one or more +1/+1 counters are put on this creature, you may create a 4/4 green Beast creature token."
Fathom Mage86%
$0.26↓#1716↑0.26↓13.6 years↑
"Whenever a +1/+1 counter is put on this creature, you may draw a card."
+1 more matching line
Renegade Krasis86%
$0.32↓#14878↓0.19↓13.3 years↑
"Whenever this creature evolves, put a +1/+1 counter on each other creature you control with a +1/+1 counter on it."
+1 more matching line
Tyranid Prime86%
$0.78↓#10010↓0.05↓3.9 years↓
"Evolve"
Knight of Wundagore85%
$0.09↓#21078↓0.00↓0.2 years↓
"Whenever you put a +1/+1 counter on another creature, put a +1/+1 counter on this creature. This ability triggers only once each turn."