I don't think they will ever add it. It would make it way too easy for people to cheat. Hell, is be one of them lol. I'd make dozens of accounts, and every time they give 500 gem gifts, is claim then on every account, buy card packs, and trade all the good ones over to my main account.
anoymous
They should do it. But secure trading in a way preventing cheating with multi accounts and giving new players too powerful cards for free. Maybe exchange ur for ur, sr for sr and so on.