Murozond the Infinite - worth to craft?

Got almost all standart priest cards, this card is only one popular that I don’t have. And many decks are using it.
Is Murozond really worth to craft? (Not much dust now).

Also - how EXACTLY this card works? Few times I got him from Galacrond, and he didn’t repeated ALL cards played by enemy on his last turn, just few.

You seem to confuse a few cards.

Zzeraku the warped - Whenever your hero takes damage, summon a 6/6 Nether Drake. (Legendary Warlock card, 8 mana, 4/12 stats, Dragon).
See https://hearthstone.gamepedia.com/Zzeraku_the_Warped

But your question appears to be about Murozond the Infinite - Battlecry: Play all cards your opponent played last turn. (Legendary neutral card, 8 mana, 8/8 statsm Dragon).
See https://hearthstone.gamepedia.com/Murozond_the_Infinite

Murozond DOES play all cards your opponent played (using random targets where targeting is needed).
But he does NOT trigger any Battlecries. If you hover your mouse over a Battlecry card in the game, you’ll see a popup: “Battlecry: Does something when you play this from your hand”.
Important words here are “you” and “from your hand”.
When Murozond plays the card, and when it’s also not from your hand, then that condition is not met, so the Battlecry will not trigger. You will get the minion on the board though (if it’s a minion card).

Oh, really. Thanks. I am almost sleeping now, and had wery busy day:). Lol. Didn’t confused card names for few YEARS).

The question remains - how usefull is card for priest, craft of not?

If it is the only one you miss then why not.
But it’s not a critical card to build a good peiest deck. Anyway in situations now and then it can be a crazy card to play. If your aiming for a tief deck you probably want it.

Don’t take it for granted, I’m not a pro. Just try and use common sense and you will see that you yourself have answer to this question.