“Don't try the paranormal until you know what's normal.” - Granny Weatherwax
"Use after another hero performs an attack. Immediately perform an attack with a Melee weapon that targets 1 of the same monsters. Then, that hero may perform an attack that targets that same monster."No, it's phrased that way because sometimes a hero may attack more than 1 monster with a single attack. (Widow Tarha's heroic feat is one example).
What exactly means "perform an attack with a Melee weapon that targets 1 of the same monsters"?
it's a monster from the same group?
Nanok's heroic feat lets you attack only 1 of the original attack's affected monsters (even in those cases when there are more than one).