Wretched Throng 

Creature — Zombie Horror
When this creature dies, you may search your library for a card named Wretched Throng, reveal it, put it into your hand, then shuffle.
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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.
Welkin Hawk 100%
$0.11#31472
"When this creature dies, you may search your library for a card named this card, reveal that card, put it into your hand, then shuffle."
Rootless Yew 98%
$0.24#16179
"When this creature dies, search your library for a creature card with power or toughness 6 or greater, reveal it, put it into your hand, then shuffle."
Draconic Muralists 96%
$0.27#7232
"When this creature dies, you may search your library for a Dragon card, reveal it, put it into your hand, then shuffle."
Lost Auramancers 96%
$0.22#16428
"When this creature dies, if it had no time counters on it, you may search your library for an enchantment card, put it onto the battlefield, then shuffle."
Deadly Grub 94%
$0.06#20704
"When this creature dies, if it had no time counters on it, create a 6/1 green Insect creature token with shroud."
Vaultborn Tyrant 93%
$32.68#1809
"When this creature dies, if it's not a token, create a token that's a copy of it, except it's an artifact in addition to its other types."
Ambitious Augmenter 93%
$0.27#15890
"When this creature dies, if it had one or more counters on it, create a 0/0 green and blue Fractal creature token, then put this creature's counters on that token."
Dragonfly Swarm 91%
$0.20#13760
"When this creature dies, if there's a Lesson card in your graveyard, draw a card."
Seed Guardian 91%
$0.06#24040
"When this creature dies, create an X/X green Elemental creature token, where X is the number of creature cards in your graveyard."
Mosswood Dreadknight // Dread Whispers 91%
$0.40#7326
"When this creature dies, you may cast it from your graveyard as an Adventure until the end of your next turn."
Noble Benefactor 90%
$0.43#11901
"When this creature dies, each player may search their library for a card and put that card into their hand. Then each player who searched their library this way shuffles."
Wretched Camel 90%
$0.07#29932
"When this creature dies, if you control a Desert or there is a Desert card in your graveyard, target player discards a card."
Flesh Carver 90%
$0.38#19770
"When this creature dies, create an X/X black Horror creature token, where X is this creature's power."
Wirewood Herald 90%
$1.85#12316
"When this creature dies, you may search your library for an Elf card, reveal that card, put it into your hand, then shuffle."
Termagant Swarm 90%
$2.34#6499
"When this creature dies, create a number of 1/1 green Tyranid creature tokens equal to this creature's power."
Wurmcoil Larva 90%
$0.20#12100
"When this creature dies, create a 1/2 black Phyrexian Wurm artifact creature token with deathtouch and a 2/1 black Phyrexian Wurm artifact creature token with lifelink."
Wurmcoil Engine 89%
$10.57#1038
"When this creature dies, create a 3/3 colorless Phyrexian Wurm artifact creature token with deathtouch and a 3/3 colorless Phyrexian Wurm artifact creature token with lifelink."