Mirrormind Crown 
Artifact — Equipment
$0.76 #4745 0.00 0.6 years
As long as this Equipment is attached to a creature, the first time you would create one or more tokens each turn, you may instead create that many tokens that are copies of equipped creature.
Equip 
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Cards similar to Mirrormind Crown 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.
Esix, Fractal Bloom91%
$0.38↓#56790.42↑5.4 years↑
"The first time you would create one or more tokens during each of your turns, you may instead choose a creature other than this card and create that many tokens that are copies of that creature."
Moonlit Meditation89%
$0.39↓#48980.25↑1.1 years
"The first time you would create one or more tokens each turn, you may instead create that many tokens that are copies of enchanted permanent."
Jinnie Fay, Jetmir's Second82%
$0.50↓#43280.22↑4.4 years↑
"If you would create one or more tokens, you may instead create that many 2/2 green Cat creature tokens with haste or that many 3/1 green Dog creature tokens with vigilance."
Divine Visitation76%
$0.39↓#1901↑0.35↑7.9 years↑
"If one or more creature tokens would be created under your control, that many 4/4 white Angel creature tokens with flying and vigilance are created instead."