Horned Helm 
Artifact — Equipment
Equipped creature gets +1/+1 and has trample.
{G}{G}: Attach this Equipment to target creature you control.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)
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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.
Novel Nunchaku 100%
$0.17#18316
"Equipped creature gets +1/+1 and has trample."
+1 more matching line
Lightning Spear 100%
$0.21#16871
"Equipped creature gets +1/+0 and has trample."
+1 more matching line
Colossal Dreadmask 97%
$0.17#13365
"Equipped creature gets +6/+6 and has trample."
+1 more matching line
Sylvok Battle-Chair 97%
$0.16#21052
"Equipped creature gets +4/+4 and has trample."
+1 more matching line
Ramosian Greatsword 95%
$0.17#16784
"Equipped creature gets +3/+1 and has trample."
+1 more matching line
Raven Clan War-Axe 91%
$0.19#13784
"Equipped creature gets +2/+0 and has trample."
+1 more matching line
Brawler's Plate 89%
$0.12#14927
"Equipped creature gets +2/+2 and has trample."
+1 more matching line
The Reaver Cleaver 88%
$14.81#567
"Equipped creature gets +1/+1 and has trample and "Whenever this creature deals combat damage to a player or planeswalker, create that many Treasure tokens.""
Vibranium Strike Gauntlets 88%
$1.24#15807
"Equipped creature gets +3/+0 and has trample and "Whenever this creature deals combat damage to a player, draw a card.""
+1 more matching line