Fists of the Demigod 

Enchantment — Aura
Enchant creature
As long as enchanted creature is black, it gets +1/+1 and has wither. (It deals damage to creatures in the form of -1/-1 counters.)
As long as enchanted creature is red, it gets +1/+1 and has first strike.
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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.
Crown of Fury 84%
$0.18#24579
"Enchanted creature gets +1/+0 and has first strike."
+1 more matching line
Lightning Reflexes 84%
$0.05#24954
"Enchanted creature gets +1/+0 and has first strike."
+1 more matching line
Spiteful Motives 80%
$0.09#25290
"Enchanted creature gets +3/+0 and has first strike."
+1 more matching line
Lightning Talons 80%
$0.06#21218
"Enchanted creature gets +3/+0 and has first strike."
+1 more matching line