True, I wouldn't call choke narrow though. It hits landstill especially and countertop/bant decks very hard. That's a fairly large % of the meta. Merfolk mu should be pretty good already, even then choke is pretty brutal if you have the pridemage/grip for their vial. Landing choke against a vial-less folk deck is GG. Same for show and tell. If you land choke before the SnT its also GG. Show and tell decks rarely get the T3 show and tell, so you have a good chance of landing it before they go off. They spend the early turns cantripping/tutoring, so landing a choke is pretty devastating. I wouldn't call choke narrow by a long mile. Those who have played against or with choke know how good that card is. Hatfield runs choke in his zoo SB. I would run it too.