Merfolk Seer {2}{U}
Creature — Merfolk Wizard
When this creature dies, you may pay {1}{U}. If you do, draw a card.
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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.
Insidious Bookworms 95%
$0.15#28531
"When this creature dies, you may pay {1}{B}. If you do, target player discards a card at random."
Giant Albatross 93%
$0.15#29288
"When this creature dies, you may pay {1}{U}. If you do, for each creature that dealt damage to this creature this turn, destroy that creature unless its controller pays 2 life. A creature destroyed this way can't be regenerated."
Cyclops Superconductor 91%
$0.17#16725
"When this creature dies, you may pay {E}{E}{E}. When you do, this creature deals damage equal to its power to any target."
Digsite Conservator 90%
$0.15#18713
"When this creature dies, you may pay {4}. If you do, discover 4."
Tenacious Dead 88%
$0.31#13188
"When this creature dies, you may pay {1}{B}. If you do, return it to the battlefield tapped under its owner's control."
Doom Weaver 87%
$2.79#8222
"As long as this card is paired with another creature, each of those creatures has "When this creature dies, draw cards equal to its power.""
Lost Auramancers 87%
$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."
Liege of the Hollows 87%
$5.52#19842
"When this creature dies, each player may pay any amount of mana. Then each player creates a number of 1/1 green Squirrel creature tokens equal to the amount of mana they paid this way."
Welkin Hawk 86%
$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."
Wretched Throng 86%
$0.05#28987
"When this creature dies, you may search your library for a card named this card, reveal it, put it into your hand, then shuffle."
Deadly Grub 85%
$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."
Rootless Yew 85%
$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."
Dragonfly Swarm 85%
$0.20#13760
"When this creature dies, if there's a Lesson card in your graveyard, draw a card."
Draconic Muralists 85%
$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."
Drainpipe Vermin 85%
$0.25#12913
"When this creature dies, you may pay {B}. If you do, target player discards a card."
Ambitious Augmenter 85%
$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."
Cemetery Puca 85%
$2.70#19361
"Whenever a creature dies, you may pay {1}. If you do, this creature becomes a copy of that creature, except it has this ability."
Museum Nightwatch 84%
$0.05#27591
"When this creature dies, create a 2/2 white and blue Detective creature token."
Salvage Drone 84%
$0.06#20633
"When this creature dies, you may draw a card. If you do, discard a card."