Yes mate...that's exactly what im talking about. the talismans. i forgot to mention it, my bad (ofc it doesn't include skill burns).
but as the gentleman above me mentioned- i also have them on my warrior golden son (just 1 set though), and before he was really a mad firestarter! But since the event it procs veeeeeeery rarely and when it does, it only applies 1-3 marks instead of 3-9 (never got 9...max was 7). Sadly this amazing combo only worked for a few days before being "ninja nerfed" again.
And of course it doesn't proc the bats extra turn,since the burn marks are applied at the "end of the turn"(in a MTG dictionary), that's not a bug.
So is it maybe just the multi hitters?