Playing arena 2v2 using double accounts

Hey, is it allowed to play arena 2v2 using 2 accounts with 2x 80 lvl chars?

I'm not great pvp player but I still wanna collect relentless set, but trying to find some random guy just to loose 10 games and gets arena point is painfull every week.

Can I be online with 2 chars on 2 sperate accounts, make team 2s, join que, get into arena and just stay there till enemy team will delete me? Or will it get me banned for collecting arena points that way?

In case you don't know you can also buy rele using emblems of frost; it's really expensive that way, but if you have spare emblems you could buy a piece or two.