Voadam
Legend
And as amusing as it sounds, a Kung Fu rust monster just doesn't seem right. While he retains his own class abilities and only loses racial abilities, I don't think a rust monster can take advantage of flurry with its antennae under RAW.
When using flurry of blows, a monk may attack only with unarmed strikes or with special monk weapons (kama, nunchaku, quarterstaff, sai, shuriken, and siangham).
Unarmed Strike: At 1st level, a monk gains Improved Unarmed Strike as a bonus feat. A monk’s attacks may be with either fist interchangeably or even from elbows, knees, and feet.
When using flurry of blows, a monk may attack only with unarmed strikes or with special monk weapons (kama, nunchaku, quarterstaff, sai, shuriken, and siangham).
Unarmed Strike: At 1st level, a monk gains Improved Unarmed Strike as a bonus feat. A monk’s attacks may be with either fist interchangeably or even from elbows, knees, and feet.