Qarsi Deceiver 
Creature — Snake Wizard
$0.08 #24034 0.00 11.6 years
: Add 
. Spend this mana only to cast a face-down creature spell, pay a mana cost to turn a manifested creature face up, or pay a morph cost. (A megamorph cost is a morph cost.)Click a line or tag to filter
Cards similar to Qarsi Deceiver 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.
Tin Street Gossip78%
$0.08#223230.21↑2.7 years↓
": Add 
. Spend this mana only to cast face-down spells or to turn creatures face up."
: Add . Spend this mana only to cast face-down spells or to turn creatures face up."
Humble Naturalist72%
$0.16↑#17349↑0.14↑6.5 years↓
": Add one mana of any color. Spend this mana only to cast a creature spell."
: Add one mana of any color. Spend this mana only to cast a creature spell."
Somberwald Sage70%
$0.49↑#2577↑0.19↑14.5 years↑
": Add three mana of any one color. Spend this mana only to cast creature spells."
: Add three mana of any one color. Spend this mana only to cast creature spells."
Beastcaller Savant70%
$0.56↑#5069↑0.28↑11.0 years
": Add one mana of any color. Spend this mana only to cast a creature spell."
: Add one mana of any color. Spend this mana only to cast a creature spell."