Long-Lost Lances 
Artifact — Equipment
Equipped creature gets +2/+0.
During your turn, creatures you control that are equipped have first strike and vigilance.
Equip 
every line here is clickable: search one ability on its own, or a few together
min match slid to 70% to fit the blend, blended scores are averages and averages land lower.
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.
Bride's Gown 78%
$0.17#22900
"Equipped creature gets +2/+0. It gets an additional +0/+2 and has first strike as long as an Equipment named Groom's Finery is attached to a creature you control."
+1 more matching line
Nahiri, Storm of Stone 74%
$0.16#17266
"During your turn, creatures you control have first strike and equip abilities you activate cost
less to activate."