Knights of the Frozen Throne Guide
Each time you play a card, transform this into a copy of it.
Does the copy retain the same card cost, or will it be free (0-mana)? This way, maybe you can't copy cards that are too costly.
ok so i found a way to get this in you're deck and opponent's hand during his turn to playtest find bugs and stuff...
so you need to be playing against shaman,if he devolves your board and you get a griemestrret informator, you bounce it and get dead man's hand, to give the card to you're opponent he can get a thoughtsteal in the same from kabal courier (but using evolve) if you want you might also use Archbishop Benedictus to get it into you're deck
First of all it's way more consistent to check this interaction using Lorewalker Cho. second my guess is the card will transform into a Dead Man's Hand before it goes into your deck, but we'll have to get our hands on the cards to make sure.
Mind Vision should work though.
the card is destroyed durning your opponent turn
Max 5 cost or 6 cost spell with Preparation (3+6 is still playable in 1 turn)