The active participle identifies the performer. From رَمَى it is رَامٍ, “one who throws”:
FormActive participle
m. singularرَامٍ
m. dualرَامِيَانِ
m. pluralرَامُونَ
f. singularرَامِيَةٌ
f. dualرَامِيَتَانِ
f. pluralرَامِيَاتٌ
The indefinite nominative masculine singular رَامٍ reflects the well-known weak-final active participle pattern. Its yāʾ is omitted in this case; dual and feminine forms reveal the underlying yāʾ differently.