Leaden Fists 

Enchantment — Aura
Flash (You may cast this spell any time you could cast an instant.)
Enchant creature
Enchanted creature gets +3/+3 and doesn't untap during its controller's untap step.
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Cards that do something similar 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.
Dance of the Dead 96%
#2286
"Enchanted creature gets +1/+1 and doesn't untap during its controller's untap step."
Bear Umbra 84%
$11.12#885
"Enchanted creature gets +2/+2 and has "Whenever this creature attacks, untap all lands you control.""