You are downloading the Urza's Assistant for MTG XAP file v126.96.36.199 for Windows Phone. Urza's Assistant for MTG is a free and useful Productivity app: Keep track of your game with Urza’s Assistant. Follow Magic: The Gathering news, look up card errata and prices, ban lists, alterative play styles, ... You can now download the offline XAP file to install & try it.
Download Locations for Urza's Assistant for MTG 188.8.131.52 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Urza's Assistant for MTG XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.