After learning that Biting Frost did not get changed in this patch while the developers experimented with things such as taking 1 damage off of the highest or lowest unit, I thought I'd throw out this idea I just came up with:

Biting Frost - Start of Turn: Deal 1 damage to the Units on the far left and right of the row. (Naturally it would only deal 1 damage if there is a single Unit on the row.)

The idea is that it would only be able to deal a maximum of 2 damage per turn, preventing the huge power swing it is currently capable of achieving in a long round. Earlier on, when a row contains 1-2 Units it still does the same thing as before. There is also the potential for higher skill cap plays if the exact wording above is used. If the Frost checks the color of the outer left and right card and then applies damage if they are (non-gold) Units, a player can place a gold card on either end of row to negate the damage. I think that would make for a new way of negating weather in addition to Clear Skies, promoting and simply not playing Units on the row. But this could also make an opponent play a gold card earlier than they would have liked, maybe to save Clear Skies for later (which sometimes doesn't work out). So that's a benefit that shouldn't be ignored when considering the overall nerf.

This change could also create synergy with neutral cards such as Manticore Venom since the enemy might group up their non-golds if they expect Frost. Finally, there is a thematic aspect as the cards on the ends of the row are shielding the center card(s) from the frost so they don't take any damage.