There are no special rules. You can use it as a normal tile, as an additional tile for the 1st expansion Inns and Cathedrals, where it can be used as an inn, and/or as an additional tile for the mini-expansion The Crop Circles.
Regarding the Ukraine Promo, we are assuming that it does not activate the logic associated with inns and crop circles by itself, so we only consider its special features when playing with the corresponding expansions (the same as the inns in River II or Exp. 8, or the crop circle in Halflings, for example).
Started by Paloi Sciurala
Started by rfielder
Started by Maj. Frost
Started by unclewill