Storm Fleet Negotiator {2}{U}
Creature — Siren Pirate
Flying
Parley — Whenever this creature attacks, each player reveals the top card of their library. For each nonland card revealed this way, you create a Map token. Then each player draws a card. (A Map token is an artifact with "{1}, {T}, Sacrifice this token: Target creature you control explores. Activate only as a sorcery.")
click a line to search just that ability, click more to combine them
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.
Innocuous Researcher 94%
$0.26#12932
"Whenever this creature attacks, each player reveals the top card of their library. For each nonland card revealed this way, you investigate. Then each player draws a card."
Goblin Guide 91%
$1.25#14644
"Whenever this creature attacks, defending player reveals the top card of their library. If it's a land card, that player puts it into their hand."
Cutthroat Negotiator 87%
$0.37#10068
"Whenever this creature attacks, each player reveals the top card of their library. For each nonland card revealed this way, you create a tapped Treasure token. Then each player draws a card."
Conundrum Sphinx 86%
$0.32#17473
"Whenever this creature attacks, each player chooses a card name. Then each player reveals the top card of their library. If the card a player revealed has the name they chose, that player puts it into their hand. If it doesn't, that player puts it on the bottom of their library."
Robber of the Rich 84%
$1.52#10249
"Whenever this creature attacks, if defending player has more cards in hand than you, exile the top card of their library. During any turn you attacked with a Rogue, you may cast that card and you may spend mana as though it were mana of any color to cast that spell."
Mezzio Mugger 84%
$0.32#12165
"Whenever this creature attacks, exile the top card of each player's library. You may play those cards this turn, and you may spend mana as though it were mana of any color to cast those spells."
Wickerfolk Thresher 83%
$0.23#10404
"Whenever this creature attacks, if there are four or more card types among cards in your graveyard, look at the top card of your library. If it's a land card, you may put it onto the battlefield. If you don't put the card onto the battlefield, put it into your hand."
Coral Fighters 81%
$0.21#27320
"Whenever this creature attacks and isn't blocked, look at the top card of defending player's library. You may put that card on the bottom of that player's library."
Caves of Chaos Adventurer 81%
$0.44#7374
"Whenever this creature attacks, exile the top card of your library. If you've completed a dungeon, you may play that card this turn without paying its mana cost. Otherwise, you may play that card this turn."
Synth Eradicator 80%
$0.32#8467
"Whenever this creature attacks, exile the top card of your library. You may get {E}{E} . If you don't, you may play that card this turn."