La Forge, Perceptive Engineer 
Legendary Creature — Human Artificer
$6.14 #30296 0.00 0.0 years
Vigilance (Attacking doesn't cause this creature to tap.)
: Add . Spend this mana only to cast an artifact spell.Click a line or tag to filter
Cards similar to La Forge, Perceptive Engineer 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.
Oaken Siren98%
$0.21↓#10960↑0.003.0 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."
Guidelight Optimizer96%
$0.20↓#10940↑0.12↑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."
Automated Artificer96%
$0.21↓#9130↑0.064.7 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 Punks96%
$0.09↓#21410↑0.15↑0.7 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."
Steelswarm Operator96%
$0.30↓#8918↑0.18↑1.3 years↑
": Add . Spend this mana only to cast an artifact spell."
: Add . Spend this mana only to cast an artifact spell."
Mishra's Workshop94%
$3925.00↑#3588↑1.60↑32.7 years↑
": Add . Spend this mana only to cast artifact spells."
: Add . Spend this mana only to cast artifact spells."
Soldevi Machinist94%
$0.25↓#282830.0931.4 years↑
": Add . Spend this mana only to activate abilities of artifacts."
: Add . Spend this mana only to activate abilities of artifacts."
Hargilde, Kindly Runechanter94%
$0.36↓#17211↑0.055.1 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%
$0.17↓#6077↑0.0922.8 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 Naturalist92%
$0.24↓#17408↑0.14↑6.6 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 Sage90%
$0.49↓#2589↑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."
Dalakos, Crafter of Wonders90%
$0.40↓#7240↑0.22↑6.8 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."
Beastcaller Savant90%
$0.47↓#5125↑0.28↑11.1 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."
Omen Hawker88%
$0.35↓#4993↑0.063.6 years↑
": Add . Spend this mana only to activate abilities."
: Add . Spend this mana only to activate abilities."
Vhal, Candlekeep Researcher88%
$0.17↓#14513↑0.31↑4.4 years↑
"Vigilance"
Renowned Weaponsmith87%
$0.08↓#15008↑0.0611.8 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."
Vodalian Arcanist87%
$0.07↓#17712↑0.008.6 years↑
": Add . Spend this mana only to cast an instant or sorcery spell."
: Add . Spend this mana only to cast an instant or sorcery spell."
Woodland Weavemaster86%
$0.27↓#12318↑0.17↑0.3 years
"Vigilance"
Gumato86%
$5.06↓#275030.000.0 years
"Vigilance"
Ambulatory Reactor86%
$0.32↓#19436↑0.0 years
"Artifact creatures you control have ": 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.""