The Night King’s handy undead dragon (R.I.P. Viserion) would be a candidate, but it wasn’t clear when he took down the Wall if he was breathing fire or some kind of icy substance.
If Winterfell is indeed destroyed, at least it will probably go out in a blaze of glory!
I do have to wonder if Dany’s dragons will be part of the reason Winterfell presumably goes up in flames.
Could Dany deliberately set fire to Winterfell if it was overrun with White Walkers and wights?