MTG's Use of Kor

I had long wondered where MTG got the word kor from. Examples of this type of card are attached. These kor cards primarily dealing with the color white (plains); it's a long shot, but think farming plains.

I just finished listening to Mechirah - Chapter Twenty Eight of the Mishneh Torah http://www.chabad.org/dailystudy/rambam.asp… --
and found that in Hebrew this word is often used in agriculture - hence the possible combination of kor with agriculture and plains.

Kor - definition of kor by The Free Dictionary
www.thefreedictionary.com/kor
kor - an ancient Hebrew unit of capacity equal to 10 baths or 10 ephahs.