Volcanic Strength 
Enchantment — Aura
$0.08 #18600 0.00 16.1 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%
$0.11↑#24509↓0.27↑26.9 years↑
"Enchanted creature gets +1/+1 and has mountainwalk."
Burrowing96%
$0.13↑#22385↓0.27↑33.1 years↑
"Enchanted creature has mountainwalk."
+1 more matching line
Primal Frenzy84%
$0.16↑#23325↓0.33↑24.9 years↑
"Enchant creature"
Giant Spectacle83%
$0.04↓#202130.36↑9.9 years↓
"Enchant creature"
Imposing Visage83%
$0.15↑#24484↓0.43↑31.3 years↑
"Enchant creature"
Vigilance83%
$0.14↑#24254↓0.22↑21.9 years↑
"Enchant creature"
Lifelink82%
$0.29↑#10533↑0.44↑17.1 years
"Enchant creature"
Messenger's Speed82%
$0.18↑#13210↑0.21↑12.9 years↓
"Enchant creature"
Fear81%
$0.04↓#160970.32↑33.1 years↑
"Enchant creature"
Spirit Mantle80%
$0.37↑#1704↑0.37↑15.1 years
"Enchant creature"
Holy Mantle80%
$0.30↑#8757↑0.33↑13.6 years↓
"Enchant creature"
Unflinching Courage80%
$0.13↑#6653↑0.0713.3 years↓
"Enchant creature"
Kamahl's Desire80%
$0.17↑#29007↓0.28↑24.9 years↑
"Enchant creature"
Red Ward80%
$0.16↑#24632↓0.56↑33.1 years↑
"Enchant creature"
Green Ward80%
$0.22↑#24838↓0.0033.1 years↑
"Enchant creature"
Diplomatic Immunity80%
$2.28↑#6285↑0.50↑26.9 years↑
"Enchant creature"
Guard Duty78%
$0.08#22451↓0.14↑16.4 years
"Enchant creature"
Runes of the Deus78%
$0.34↑#12722↑0.0018.3 years↑
"Enchant creature"
Dryad's Favor77%
$0.21↑#187170.18↑16.1 years
"Enchanted creature has forestwalk."
+1 more matching line
Phyresis77%
$2.39↑#2911↑0.90↑15.6 years
"Enchant creature"