Wickerfolk Thresher {3}{G}
Artifact Creature — Scarecrow
Delirium — 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.
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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 85%
$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 84%
$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."
Rulik Mons, Warren Chief 84%
$0.17#12851
"Whenever this card attacks, look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. If you didn't put a card onto the battlefield this way, create a 1/1 red Goblin creature token."
Coral Fighters 83%
$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."
Storm Fleet Negotiator 83%
$0.23#8920
"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."
Robber of the Rich 82%
$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."
Sigarda, Champion of Light 81%
$0.76#11606
"Whenever this card attacks, if you control three or more creatures with different powers, look at the top five cards of your library. You may reveal a Human creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order."
Hans Eriksson 81%
$0.13#17784
"Whenever this card attacks, reveal the top card of your library. If it's a creature card, put it onto the battlefield tapped and attacking defending player or a planeswalker they control. Otherwise, put that card into your hand. When you put a creature card onto the battlefield this way, it fights this card."
Sapling of Colfenor 81%
$7.08#6640
"Whenever this card attacks, reveal the top card of your library. If it's a creature card, you gain life equal to that card's toughness, lose life equal to its power, then put it into your hand."
Yennett, Cryptic Sovereign 81%
$0.35#10884
"Whenever this card attacks, reveal the top card of your library. You may cast it without paying its mana cost if its mana value is odd. If you don't cast it, draw a card."