Unshakable Tail 
Creature — Zombie Detective
$0.34 #7841 0.21 2.7 years
When this creature enters and at the beginning of your upkeep, surveil 1.
Whenever one or more creature cards are put into your graveyard from your library, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")
, Sacrifice this token: Draw a card."), Sacrifice a Clue: Return this card from your graveyard to your hand.Click a line or tag to filter
Cards similar to Unshakable Tail 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.
Purple Pentapus84%
$0.13↓#15991↓0.03↓0.9 years↓
"When this creature enters, surveil 1."
Curious Cadaver80%
$0.07↓#27623↓0.00↓2.7 years
"When you sacrifice a Clue, return this card from your graveyard to your hand."
Ulvenwald Mysteries80%
$0.07↓#78960.1210.5 years↑
"Whenever a nontoken creature you control dies, investigate."
+1 more matching line
Master of Death80%
$0.32↓#73410.195.5 years↑
"When this creature enters, surveil 2."
+1 more matching line
Eloise, Nephalia Sleuth79%
$0.36↑#11799↓0.185.1 years↑
"Whenever another creature you control dies, investigate."
+1 more matching line
Sinister Starfish78%
$0.10↓#92250.00↓5.3 years↑
"
: Surveil 1."
: Surveil 1."
MACH-1, Swooping Scoundrel78%
$0.26↓#25846↓0.270.3 years↓
"When this card enters and whenever you gain life, surveil 1. This ability triggers only once each turn."
Wretched Doll78%
$0.14↓#21347↓0.06↓1.7 years↓
", : Surveil 1."
, : Surveil 1."
Essence Anchor78%
$0.25↓#86240.241.5 years↓
"At the beginning of your upkeep, surveil 1."
Think Tank78%
$0.23↓#20870↓0.10↓25.1 years↑
"At the beginning of your upkeep, surveil 1."
Sultai Ascendancy78%
$0.33↓#93160.00↓12.1 years↑
"At the beginning of your upkeep, surveil 2."
Whisper Agent77%
$0.09↓#24223↓0.06↓8.0 years↑
"When this creature enters, surveil 1."
Sanitation Automaton77%
$0.08↓#22572↓0.00↓2.7 years
"When this creature enters, surveil 1."
Imperious Inkmage77%
$0.06↓#25161↓0.130.5 years↓
"When this creature enters, surveil 2."
Dimir Informant77%
$0.15↓#24534↓0.00↓8.0 years↑
"When this creature enters, surveil 2."
Sterling Hound77%
$0.15↓#17644↓0.122.5 years
"When this creature enters, surveil 2."
Dogged Detective77%
$0.27↓#71960.06↓4.5 years↑
"When this creature enters, surveil 2."
A.I.M. Synthoids77%
$0.15↓#19059↓0.200.3 years↓
"When this creature enters, surveil 2."
Rune-Sealed Wall77%
$0.24↓#10579↓0.00↓1.9 years
": Surveil 1."
: Surveil 1."
Shore Lurker76%
$0.08↓#24428↓0.07↓0.7 years↓
"When this creature enters, surveil 1."