This is a secret page dedicated for a direct installation of game apk Magic: The Gathering Arena (mtga) on a "cloud mobile" without proxies.
First download via APKPure's link for mtga .xapk file, a direct link without crossing the GFW for now (26/02/21) is this. If it doesn't work, there are some other direct links from uptodown, apk.support and moddroid for replacement. Open softonic offical page with other browser (like Alook) may also help.
Fine, another option is use a web transfer tool, like cow transfer.
Then download an arbitrary Xapk installer, maybe a direct link of APKPure official app will just work.
Edit: yesterday (23/02/22) I managed to play on a cloud mobile for a while. But today the fast download link failed and other links wouldn't work. I updated some links but things are still bad. Tomorrow I may try again.