Quick Draw 
Instant
Target creature you control gets +1/+1 and gains first strike until end of turn. Creatures target opponent controls lose first strike and double strike until end of turn.
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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.
Weapon Surge 98%
$0.13#18461
"Target creature you control gets +1/+0 and gains first strike until end of turn."
Lunar Frenzy 88%
$0.20#10596
"Target creature you control gets +X/+0 and gains first strike and trample until end of turn."