Cold Snap 

Enchantment
$0.19 #31267 0.25 31.3 years
Cumulative upkeep
(At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
At the beginning of each player's upkeep, this enchantment deals damage to that player equal to the number of snow lands they control.
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Cards similar to Cold Snap 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.
Power Surge84%
$1.11↑#11497↑0.43↑33.1 years↑
"At the beginning of each player's upkeep, this enchantment deals X damage to that player, where X is the number of untapped lands they controlled at the beginning of this turn."
Mask of Intolerance82%
$0.28↑#302920.50↑25.3 years↓
"At the beginning of each player's upkeep, if there are four or more basic land types among lands that player controls, this artifact deals 3 damage to that player."
Citadel of Pain78%
$4.17↑#6667↑1.11↑26.3 years↓
"At the beginning of each player's end step, this enchantment deals X damage to that player, where X is the number of untapped lands they control."
Copper Tablet78%
$56.45↑#15363↑0.11↓33.1 years↑
"At the beginning of each player's upkeep, this artifact deals 1 damage to that player."
Acidic Soil78%
$0.49↑#8031↑0.73↑27.9 years↓
"this card deals damage to each player equal to the number of lands they control."