Oaken Siren 
Artifact Creature — Siren Pirate
$0.20 #10953 0.00 2.9 years
Flying, vigilance
: Add . Spend this mana only to cast an artifact spell or activate an ability of an artifact source.Click a line or tag to filter
Cards similar to Oaken Siren 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.
Guidelight Optimizer96%
$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 Operator95%
$0.25↑#90260.18↑1.2 years↓
": Add . Spend this mana only to activate abilities of artifact sources."
: Add . Spend this mana only to activate abilities of artifact sources."
Automated Artificer95%
$0.22↑#90960.064.7 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."
Purple Dragon Punks95%
$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."
Soldevi Machinist94%
$0.25↑#28027↓0.0931.4 years↑
": Add . Spend this mana only to activate abilities of artifacts."
: Add . Spend this mana only to activate abilities of artifacts."
Mishra's Workshop92%
$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."
Hargilde, Kindly Runechanter92%
$0.36↑#17126↓0.055.0 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 Engineer92%
$0.16↓#6060↑0.0922.7 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."
Humble Naturalist90%
$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 Sage88%
$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 Savant88%
$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."
Dalakos, Crafter of Wonders88%
$0.35↑#7081↑0.22↑6.7 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."
Omen Hawker86%
$0.38↑#4999↑0.063.5 years
": Add . Spend this mana only to activate abilities."
: Add . Spend this mana only to activate abilities."
Giada, Font of Hope86%
$0.54↑#1618↑0.56↑4.5 years↑
"Flying, vigilance"
Renowned Weaponsmith86%
$0.08↓#14991↓0.0611.7 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."
Steward of Valeron84%
$0.26↑#18105↓0.0718.0 years↑
"Vigilance"
Cargo Ship84%
$0.23↑#107520.061.4 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."+1 more matching line
Osgood, Operation Double84%
$0.32↑#13429↓0.25↑3.0 years
": Add . Spend this mana only to cast an artifact spell or activate an ability of an artifact."
: Add . Spend this mana only to cast an artifact spell or activate an ability of an artifact."
Silver Myr84%
$0.23↑#1254↑0.0623.0 years↑
": Add ."
: Add ."
Princess Lucrezia84%
$2.86↑#30137↓0.0732.4 years↑
": Add ."
: Add ."