While the card does not see much play in meta decks, it is occasionally relevant in decks like Blissey ex to make those Pokmon incredibly difficult to knock out because of their immense HP, making Hero's Cape a phenomenal option for a few rogue decks
The smartest enthusiasts are pivoting from collecting to creating
Syncopate(decent) Im never sure whether to list counterspells as removal or not, but either way, Syncopate is the only common counterspell in this set
This means your opponent will have to scramble to finish powering up their Active Pokemon or find a way to stop Arbok from using its Move
This all happens at instant speed so unless you have a way to stop Protean Hulk's effect from resolving, everyone loses
Where the Frostfang was all about threatening Deathtouch versus drawing cards, Ice-Fang Coatl's plan is far more direct