Totally not worth getting. Provides a good bit of resistances, but there are no fire+ice levels... aside from the current xmas one. Given that the thanksgiving one was free, we're talking about gaining a whopping fire low as well. Or is it the same as a fire med? Somewhere around there.
Exact stats by Zeddy:
It's a fire low + freeze low + 4 health.
So 1/2 of 5* fire trinket + 1/2 of 5* freeze trinket + 2/3 of 5* heart trinket.
So it was exactly what I thought it was. Grand.
But
But
+1 health...
You could replace a 5* fire/ice trinket for it for an extra health pip while still having wisp resistance...
Maybe...