You are downloading the Urza's Assistant for MTG XAP file v188.8.131.52 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 184.108.40.206 XAP file
Note: 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.