Paperfin Rascal 

Creature — Merfolk Rogue
$0.25 #16872 0.00 19.0 years
When this creature enters, clash with an opponent. If you win, put a +1/+1 counter on this creature. (Each clashing player reveals the top card of their library, then puts that card on their choice of the top or bottom. A player wins if their card had a greater mana value.)
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Cards similar to Paperfin Rascal expected a card that isn't here?
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Oaken Brawler100%
$0.24↓#28625↓0.0019.0 years
"When this creature enters, clash with an opponent. If you win, put a +1/+1 counter on this creature."
Adder-Staff Boggart100%
$0.18↓#26961↓0.0019.0 years
"When this creature enters, clash with an opponent. If you win, put a +1/+1 counter on this creature."
Bog Hoodlums100%
$0.08↓#21899↓0.0019.0 years
"When this creature enters, clash with an opponent. If you win, put a +1/+1 counter on this creature."
Nath's Elite96%
$0.10↓#25949↓0.16↑19.0 years
"When this creature enters, clash with an opponent. If you win, put a +1/+1 counter on this creature."
Sentry Oak86%
$0.18↓#29934↓0.0619.0 years
"At the beginning of combat on your turn, you may clash with an opponent. If you win, this creature gets +2/+0 and loses defender until end of turn."
Research the Deep82%
$0.37↑#12253↑0.10↑18.7 years
"Draw a card. Clash with an opponent. If you win, return this card to its owner's hand."
Pulling Teeth82%
$0.19↓#149090.30↑18.7 years
"Clash with an opponent. If you win, target player discards two cards. Otherwise, that player discards a card."
Ringskipper80%
$0.29↑#154300.0619.0 years
"When this creature dies, clash with an opponent. If you win, return this card to its owner's hand."
Lash Out79%
$0.12↓#27814↓0.27↑19.0 years
"this card deals 3 damage to target creature. Clash with an opponent. If you win, this card deals 3 damage to that creature's controller."
Springjack Knight77%
$0.17↓#28729↓0.0019.0 years
"Whenever this creature attacks, clash with an opponent. If you win, target creature gains double strike until end of turn."
Pollen Lullaby76%
$0.29↑#193880.33↑19.0 years
"Prevent all combat damage that would be dealt this turn. Clash with an opponent. If you win, creatures that player controls don't untap during the player's next untap step."