Ok, so we got some new traits like Necromancy and now I'm would like to know something. If I want to play a card with Necromancy out of my piscard pile do I need to pay the cost of that card to return it to the bottom of my deck?

Example: My opponent just killed my Skeletal Horde and they entered discard pile. So to use the Necromancy now I need to pay 2 resource to return them to the bottom of my deck. I'm I right?

That's not how it works at all.

Necromancy has no effect when something dies. Instead, during your capital phase when you could play a unit you may play one with necromancy from your discard pile.

If that unit is still in play at the end of the turn, it gets put on the bottom of your deck.

Correct.

At least that is how I am reading it. [as Morph has]

So if I have for example Skeletal Horde in my discard pile burning my Capitol phase I can pay 2 resource (cost of that unit) to bring it back to in play. If I do that, that unit goes at the bottom of my deck, correct?

The importent part is that if I need to pay all the cost? I think yes, becouse the new FAQ says that Play = pay all costs.

When you pay the cost the unit comes into play, in any of your zones.

Then at the end of that turn it goes to the bottom of your deck (if it's still in play).

You're not paying to put it on the bottom of your deck.