Forum:Black-Winged Dragon Effect Rulings

Hi, does the effect for Black-Winged Dragon operate as it follows:

"Once per turn, you can remove all Black Feather Counters on this card to have 1 face-up monster your opponent controls lose 700 ATK for each Black Feather Counter, and inflict damage to your opponent equal to the ATK lost by that monster because of this effect."

First of all, if there is two or more Black Feather counters on it, could I split them up to target two monsters, So basically can I choose how many counters and how many monsters I target,

or does it HAVE to be like this

I lose all the counters I have to target only one monster.

Thanks for your time and help :)