Ob Nixilis, Captive Kingpin 
Legendary Creature — Demon
$14.80 #4506 0.65 3.4 years
Flying, trample
Whenever one or more opponents each lose exactly 1 life, put a +1/+1 counter on Ob Nixilis. Exile the top card of your library. Until your next end step, you may play that card.
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Cards similar to Ob Nixilis, Captive Kingpin 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.
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"Flying, trample"
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"
: Exile the top card of your library. Until your next end step, you may play it."
: Exile the top card of your library. Until your next end step, you may play it."
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$0.18↓#47790.14↓7.7 years↑
"During your turn, if an opponent lost life this turn, you may play lands and cast spells from among cards exiled with this enchantment."
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"At the beginning of your upkeep, exile the top card of your library. You may play that card this turn."
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"Remove two counters from this card: Exile the top card of your library. You may play that card this turn."
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"Exile the top two cards of your library. Until the end of your next turn, you may play those cards."
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", Discard a card: Exile the top card of your library. Until the end of your next turn, you may play that card."
, Discard a card: Exile the top card of your library. Until the end of your next turn, you may play that card."
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