Most of them are crap.. like getting 3 star toons from rare souls constantly.

Even the epics just give me white/blue T2 with the same stats as T1s.

But I have picked up a couple with Void and Death mark recently. Stats aren't much better... just the different augment.

Via cosmic keys I've been getting about 1 every other day.. and then an epic once a week. I'v never seen a T3 drop.. and other than a single yellow T2... everything else has been a white/blue T2 from epics. I'm about halfway to a "mythical" though.. so who knows. None of it really matters though.. it not like they can be evolved in a reasonable time frame. So they mostly collect dust or are sold when I start getting several with the same or similar stats.