Early Frost 

Instant
$0.13 #25566 0.59 22.4 years
Tap up to three target lands.
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Cards similar to Early Frost 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.
Gulf Squid88%
$0.14↑#275810.5026.4 years↑
"When this creature enters, tap all lands target player controls."
Chandra's Revolution78%
$0.07↓#218450.41↓9.7 years↓
"this card deals 4 damage to target creature. Tap target land. That land doesn't untap during its controller's next untap step."
Mana Short76%
$0.43↑#15558↑1.27↑33.2 years↑
"Tap all lands target player controls and that player loses all unspent mana."
Stensia Innkeeper76%
$0.13#293910.29↓10.2 years↓
"When this creature enters, tap target land an opponent controls. That land doesn't untap during its controller's next untap step."
Mana Leech74%
$0.26↑#304040.25↓28.0 years↑
"
: Tap target land. It doesn't untap during its controller's untap step for as long as this creature remains tapped."
Mole Worms74%
$0.18↑#303980.89↑31.4 years↑
"
: Tap target land. It doesn't untap during its controller's untap step for as long as this creature remains tapped."
Malicious Advice74%
$0.04↓#31387↓0.26↓25.7 years↑
"Tap X target artifacts, creatures, and/or lands. You lose X life."
Floodbringer72%
$0.15↑#19013↑0.22↓21.7 years
"
, Return a land you control to its owner's hand: Tap target land."
Mana Web71%
$18.07↑#11750↑1.64↑29.4 years↑
"Whenever a land an opponent controls is tapped for mana, tap all lands that player controls that could produce any type of mana that land could produce."