Hydraulic Helper 
Artifact Creature — Robot
$0.12 #17630 0.22 0.3 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%
$0.22↑#10990↑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."
Purple Dragon Punks91%
$0.11↓#21500↓0.150.6 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."
Steelswarm Operator90%
$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."
Vedalken Engineer89%
$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."
Soldevi Machinist89%
$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 Runechanter88%
$0.36↑#171260.05↓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."
Vine Trellis87%
$0.23↑#6248↑0.00↓27.0 years↑
"Defender"
Dalakos, Crafter of Wonders84%
$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."
Omen Hawker84%
$0.38↑#4999↑0.06↓3.5 years↑
": Add . Spend this mana only to activate abilities."
: Add . Spend this mana only to activate abilities."
The Mightstone and Weakstone83%
$4.26↑#3056↑0.11↓3.9 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%
$0.30↑#9697↑0.12↓7.7 years↑
"Defender"
Oaken Siren82%
$0.20↑#10953↑0.00↓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."
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."
Automated Artificer80%
$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."
Osgood, Operation Double79%
$0.32↑#13429↑0.253.0 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."
James, Wandering Dad // Follow Him78%
$0.30↑#8736↑0.00↓2.6 years↑
": Add . Spend this mana only to activate abilities."
: Add . Spend this mana only to activate abilities."
Wall of Roots78%
$0.19↑#3607↑0.1430.0 years↑
"Defender"
Cargo Ship78%
$0.23↑#10752↑0.06↓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."
Overgrown Battlement78%
$0.27↑#2837↑0.05↓16.5 years↑
"Defender"
Axebane Guardian78%
$0.15↑#3285↑0.2014.0 years↑
"Defender"