I made an MWS patch for Battlebond by putting the cards into MSE and exporting in MWS format. I did only the new cards as that was hard enough, you can play the reprints by using their previous expansion codes. The new planeswalker cards have a packed text box but otherwise this seems to work
http://www.mediafire.com/file/igdnh2ckvctuyct/Battlebond new cards.txt
http://www.mediafire.com/file/42m1d8ls497b3kb/Master [through BBD].mwBase
Vintage: Dredge | Legacy: Burn, Goblins, Soldier | Standard: Mono-Red Aggro
Commander: Nicol Bolas, Sliver Overlord, Rafiq
Casual: Selesnya Saproling Smackdown, Izzet Labs, Rebel
Played since June 2004, mostly inactive June 2011 to March 2018
Other usernames include AlanFromRochester, homerthebeerbaron
MTG checklists from Alpha to Ravnica Allegiance - https://www.mtgsalvation.com/forums/magic-fundamentals/other-magic-products/third-party-products/805324-checklists-for-everything-from-alpha-to-ravnica