Voltaic Servant 
Artifact Creature — Construct
$0.20 #10361 0.04 8.5 years
At the beginning of your end step, untap target artifact.
Click a line or tag to filter
Cards similar to Voltaic Servant 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.
Corridor Monitor88%
$0.10↓#90790.15↑7.0 years↓
"When this creature enters, untap target artifact or creature you control."
Unwinding Clock85%
$19.99↑#545↑1.36↑15.4 years↑
"Untap all artifacts you control during each other player's untap step."
Cat-Owl84%
$0.12↓#18513↓0.20↑0.9 years↓
"Whenever this creature attacks, untap target artifact or creature."
Dross Scorpion82%
$0.29↑#106420.0623.0 years↑
"Whenever this creature or another artifact creature dies, you may untap target artifact."
Clock of Omens82%
$3.44↑#1701↑0.98↑22.4 years↑
"Tap two untapped artifacts you control: Untap target artifact."
Teferi, Timebender79%
$1.40↑#16975↓0.38↑8.5 years
"+2: Untap up to one target artifact or creature."
Mobile Garrison79%
$0.30↑#109220.059.7 years↑
"Whenever this Vehicle attacks, untap another target artifact or creature you control."
Hyperion Blacksmith77%
$2.40↑#31976↓0.1132.4 years↑
"
: You may tap or untap target artifact an opponent controls."
Living Brain, Mechanical Marvel76%
$0.12↓#16083↓0.29↑1.1 years↓
"At the beginning of combat on your turn, target non-Equipment artifact you control becomes an artifact creature with base power and toughness 3/3 until end of turn. Untap it."
Mirran Spy74%
$0.28↑#87190.31↑15.7 years↑
"Whenever you cast an artifact spell, you may untap target creature."