Grimoire Thief 
Creature — Merfolk Rogue
$0.64 #23796 0.67 18.6 years
Whenever this creature becomes tapped, exile the top three cards of target opponent's library face down.
You may look at cards exiled with this creature.
, Sacrifice this creature: Turn all cards exiled with this creature face up. Counter all spells with those names.Click a line or tag to filter
Cards similar to Grimoire Thief 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.
Mindreaver88%
$0.13↓#31026↓0.12↓12.6 years↓
", Sacrifice this creature: Counter target spell with the same name as a card exiled with this creature."
, Sacrifice this creature: Counter target spell with the same name as a card exiled with this creature."+1 more matching line
Daring Apprentice76%
$0.33↓#16917↑0.7529.9 years↑
"
, Sacrifice this creature: Counter target spell."
, Sacrifice this creature: Counter target spell."
Jester's Scepter73%
$0.39↓#250150.19↓20.1 years↑
"When this artifact enters, exile the top five cards of target player's library face down. You may look at those cards for as long as they remain exiled."
+1 more matching line
Cerulean Drake70%
$0.11↓#17958↑0.33↓7.2 years↓
"Sacrifice this creature: Counter target spell that targets you."