Wild Dogs 
Creature — Dog
$0.12 #25207 0.47 27.9 years
At the beginning of your upkeep, if a player has more life than each other player, the player with the most life gains control of this creature.
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Cards similar to Wild Dogs 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.
Ghazbán Ogre96%
$0.11↓#30659↓0.27↓32.7 years↑
"At the beginning of your upkeep, if a player has more life than each other player, the player with the most life gains control of this creature."
Wild Mammoth92%
$0.15↑#31085↓0.00↓26.6 years↓
"At the beginning of your upkeep, if a player controls more creatures than each other player, the player who controls the most creatures gains control of this creature."
Emberwilde Djinn82%
$0.64↑#288950.00↓29.9 years↑
"At the beginning of each player's upkeep, that player may pay 
or 2 life. If the player does, they gain control of this creature."