Hydraulic Helper 
Artifact Creature — Robot
$0.15 #18652 0.00 0.2 years
Defender
: Add . This mana can't be spent to cast a nonartifact spell.Click a line or tag to filter
Cards similar to Hydraulic Helper 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 Optimizer92%
$0.21↑#11026↑0.21↑1.6 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."
Purple Dragon Punks91%
$0.09↓#218010.000.5 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 Operator90%
$0.23↑#9262↑0.081.1 years
": Add . Spend this mana only to cast an artifact spell."
: Add . Spend this mana only to cast an artifact spell."
Vedalken Engineer89%
$0.17↑#5982↑0.22↑22.6 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."
Soldevi Machinist89%
$0.26↑#27664↓0.0031.3 years↑
": Add 
. Spend this mana only to activate abilities of artifacts."
: Add . Spend this mana only to activate abilities of artifacts."
Hargilde, Kindly Runechanter88%
$0.37↑#169080.004.9 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."
Vine Trellis87%
$0.25↑#6187↑0.19↑26.9 years↑
"Defender"
Dalakos, Crafter of Wonders84%
$0.36↑#7058↑0.006.6 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 Hawker84%
$0.36↑#5016↑0.003.4 years↑
": Add . Spend this mana only to activate abilities."
: Add . Spend this mana only to activate abilities."
The Mightstone and Weakstone83%
$5.26↑#3021↑0.073.8 years↑
": Add . This mana can't be spent to cast nonartifact spells."
: Add . This mana can't be spent to cast nonartifact spells."
Saruli Caretaker83%
$0.27↑#9605↑0.19↑7.6 years↑
"Defender"
Oaken Siren82%
$0.26↑#10702↑0.062.8 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."
Renowned Weaponsmith82%
$0.08↓#14796↑0.16↑11.6 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."
Automated Artificer80%
$0.20↑#9007↑0.40↑4.5 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."
Osgood, Operation Double79%
$0.28↑#13207↑0.40↑2.9 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."
James, Wandering Dad // Follow Him78%
$0.32↑#8618↑0.33↑2.5 years↑
": Add . Spend this mana only to activate abilities."
: Add . Spend this mana only to activate abilities."
Wall of Roots78%
$0.19↑#3598↑0.16↑29.9 years↑
"Defender"
Cargo Ship78%
$0.20↑#10880↑0.18↑1.2 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."
Axebane Guardian78%
$0.16↑#3296↑0.18↑13.9 years↑
"Defender"
Overgrown Battlement78%
$0.29↑#2851↑0.12↑16.4 years↑
"Defender"