Quote from SilverWolf_27 »
Seriously, how didn't they catch it before release?
Designer 1: "Shouldn't we limit it to countering only opponents' spells?"
Designer 2: "Why? There is random mill, so they couldn't stack their library. And besides, who would even want to counter their own spells?"
Just played a game against it, but this time, opponent has Valki/Tibalt in deck, and they use Tibalt's Trickery for Tibalt.
Needless to say, from turn 2 they keep exiling mine and their cards, and because they have mainly lands, can very soon casting my own stuff.
In the end they ultimated Tibalt, and among exiled cards they cast another Tormod's Crypt/Trickery to find another Valki/Tibalt.
At least this was new and interesting.