Blim, Comedic Genius 


Legendary Creature — Imp
Flying
Whenever Blim deals combat damage to a player, that player gains control of target permanent you control. Then each player loses life and discards cards equal to the number of permanents they control but don't own.
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Cards that do something similar 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.
Kain, Traitorous Dragoon 90%
$0.27#8377
"Whenever this card deals combat damage to a player, that player gains control of this card. If they do, you draw that many cards, create that many tapped Treasure tokens, then lose that much life."
Oroku Saki, Shredder Rising 84%
$0.17#13857
"Whenever this card deals combat damage to a player, you draw a card and lose 1 life."
Ludevic, Necro-Alchemist 81%
#13644
"At the beginning of each player's end step, that player may draw a card if a player other than you lost life this turn."
Kothophed, Soul Hoarder 80%
$0.29#8688
"Whenever a permanent owned by another player is put into a graveyard from the battlefield, you draw a card and you lose 1 life."
Elegy Acolyte 80%
$0.31#5737
"Whenever one or more creatures you control deal combat damage to a player, you draw a card and lose 1 life."