Osgood, Operation Double 
Legendary Creature — Human Alien Shapeshifter
$0.32 #13429 0.25 3.0 years
When you cast this spell, create a token that's a copy of it, except it isn't legendary.
: Add 
. Spend this mana only to cast an artifact spell or activate an ability of an artifact.Paradox — Whenever you cast a spell from anywhere other than your hand, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")
, Sacrifice this token: Draw a card.")Click a line or tag to filter
Cards similar to Osgood, Operation Double 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 Dragon Punks90%
$0.11↓#21500↓0.15↓0.6 years↓
": Add 
. Spend this mana only to cast an artifact spell or to activate an ability."
: Add . Spend this mana only to cast an artifact spell or to activate an ability."
Guidelight Optimizer90%
$0.22↓#109900.12↓1.7 years↓
": Add . Spend this mana only to cast an artifact spell or activate an ability."
: Add . Spend this mana only to cast an artifact spell or activate an ability."
Steelswarm Operator87%
$0.25↓#9026↑0.181.2 years↓
": Add . Spend this mana only to cast an artifact spell."
: Add . Spend this mana only to cast an artifact spell."
Soldevi Machinist87%
$0.25↓#28027↓0.09↓31.4 years↑
": Add . Spend this mana only to activate abilities of artifacts."
: Add . Spend this mana only to activate abilities of artifacts."
Hargilde, Kindly Runechanter86%
$0.36↑#17126↓0.05↓5.0 years↑
": Add . Spend this mana only to cast artifact spells or activate abilities of artifacts."
: Add . Spend this mana only to cast artifact spells or activate abilities of artifacts."
Vedalken Engineer86%
$0.16↓#6060↑0.09↓22.7 years↑
": Add two mana of any one color. Spend this mana only to cast artifact spells or activate abilities of artifacts."
: Add two mana of any one color. Spend this mana only to cast artifact spells or activate abilities of artifacts."
Oaken Siren84%
$0.20↓#109530.00↓2.9 years
": Add . Spend this mana only to cast an artifact spell or activate an ability of an artifact source."
: Add . Spend this mana only to cast an artifact spell or activate an ability of an artifact source."
Dalakos, Crafter of Wonders83%
$0.35↑#7081↑0.226.7 years↑
": Add . Spend this mana only to cast artifact spells or activate abilities of artifacts."
: Add . Spend this mana only to cast artifact spells or activate abilities of artifacts."
Vega, the Watcher83%
$0.30↓#2573↑0.11↓5.7 years↑
"Whenever you cast a spell from anywhere other than your hand, draw a card."
Omen Hawker82%
$0.38↑#4999↑0.06↓3.5 years
": Add . Spend this mana only to activate abilities."
: Add . Spend this mana only to activate abilities."
Renowned Weaponsmith82%
$0.08↓#149910.06↓11.7 years↑
": Add . Spend this mana only to cast artifact spells or activate abilities of artifacts."
: Add . Spend this mana only to cast artifact spells or activate abilities of artifacts."
Forensic Gadgeteer82%
$2.04↑#1406↑0.252.7 years
"Whenever you cast an artifact spell, investigate."
Automated Artificer81%
$0.22↓#9096↑0.06↓4.7 years↑
": Add . Spend this mana only to activate an ability or cast an artifact spell."
: Add . Spend this mana only to activate an ability or cast an artifact spell."
Lavinia, Foil to Conspiracy80%
$0.43↑#10295↑0.12↓2.7 years
"Whenever you cast your second spell each turn, investigate."
+1 more matching line
Jem Lightfoote, Sky Explorer80%
$0.16↓#21223↓0.00↓2.5 years
"At the beginning of your end step, if you haven't cast a spell from your hand this turn, draw a card."
Cargo Ship80%
$0.23↓#107520.06↓1.4 years↓
": Add . Spend this mana only to cast an artifact spell or activate an ability of an artifact source."
: Add . Spend this mana only to cast an artifact spell or activate an ability of an artifact source."
James, Wandering Dad // Follow Him80%
$0.30↓#8736↑0.00↓2.6 years
": Add . Spend this mana only to activate abilities."
: Add . Spend this mana only to activate abilities."
Hydraulic Helper79%
$0.12↓#17630↓0.220.3 years↓
": Add . This mana can't be spent to cast a nonartifact spell."
: Add . This mana can't be spent to cast a nonartifact spell."
Mishra's Workshop78%
$3699.99↑#3678↑1.60↑32.6 years↑
": Add . Spend this mana only to cast artifact spells."
: Add . Spend this mana only to cast artifact spells."
Sage of the Unknowable78%
$0.12↓#20875↓0.00↓2.3 years
": Add . Spend this mana only to cast a colorless spell or to activate an ability."
: Add . Spend this mana only to cast a colorless spell or to activate an ability."