I have a bunch of other MM15 cards if there's another trade to be made, but mainly interested in picking up a Promo Ugin for my Tron deck.

thanks for looking

This guy posted that he was looking for that exact swap in the Reddit trade thread:
http://deckbox.org//users/kona_worldwaker
Good luck.

thanks, the trade is going to happen! First time i've had to consider insurance on mailing an item...

Do it