Volcanic Strength 

Enchantment — Aura
$0.09 #18918 0.16 16.3 years
Enchant creature
Enchanted creature gets +2/+2 and has mountainwalk. (It can't be blocked as long as defending player controls a Mountain.)
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Cards similar to Volcanic Strength 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.
Cave Sense100%
$0.13↑#24906↓0.2227.0 years↑
"Enchanted creature gets +1/+1 and has mountainwalk."
+1 more matching line
Burrowing96%
$0.12↑#226470.00↓33.2 years↑
"Enchanted creature has mountainwalk."
+1 more matching line
Dryad's Favor77%
$0.21↑#189340.41↑16.3 years
"Enchanted creature has forestwalk."
+1 more matching line
Spectral Flight76%
$0.16↑#199330.06↓15.1 years↓
"Enchanted creature gets +2/+2 and has flying."
+1 more matching line