Hearthpwn

Can someone explain the mechanic when Hyldnir Frostrider have not frozen Squirrel (created by opponent's Tinkmaster Overspark) that have not attacked on purpose (I saw it on Shtan_Udachi's stream)? I guess it's because it is not "my" minion, because I have not played it, and it becomes "my" when I do attack with it, right? But what about mind-controlled minion by Mind Control or Mind Control Tech, etc.?

P.s. Okay, I found the answer: https://www.hearthpwn.com/forums/hearthstone-general/card-discussion/198993-new-card-reveal-hyldnir-frostrider?comment=17

Well, today I learned that's a polar bear not some sort of alligator. 

Why would you first play this and then morabi? The other way around is so much better.

Can't wait to see highlights of a situation when

1) Player A has no minions on board,

2) Player B has a (few) minion(s), but doesn't attack face. Oh, lets say a Stubborn Gastropod,
   - Player B plays Hyldnir Frostrider freezing his other minions,

3) Player A plays e.g. The Lich King and pings the gastropod.

4) The frozen minions will unfreeze the next turn. Boom :D

EDIT: Here you have Trump explaining what I mean :P https://youtu.be/XplMVmIFnUc?t=4m40s

If you watch the stream you will see when they playd the card and the frozen minion unfroze right when the turn ended.

mening that the frezing mechanic has changed and now unfrezes the minions that are frozen at the end of the turn of the player that have the frozen minion.

so this card is good if you just play it after you are done attacking.

sorry for bad english.

Edit: I just reilized somthing that Cryostasis gives +3/+3 and only frezes the minion untill (if you buffed your minion) the end of you turn and Frozen Crusher from ungoro is now a 6 mana 8/8 that only frezes him self untill the end of the turn.

it froze the Shaman taunt totem that hadn't attacked that turn already and thus lost it's "next attack"

Looks like a nice empty board drop

First card featuring female vrykul?  She's riding the rare mount you get from one of her faction members.

The Hyldnir

technically, val'kyr are a form of vrykul

I bet this will see a lot of play in arena, pretty good if you trade your 2 drop and then play this. As for constructed, maybe the new shaman? I guess it could work in most decks that run mostly spells, but I can't see a 3 mana 4/4 with a downside really being good enough to run in a lot of competitive decks. I feel like most control decks have better 3 mana cards 

Will your frozen minions be able to attack during your next turn?  If so, what's the downside haha.

The frozen minions will no be unfrozen the next turn. 

Sleeper Card? 

This + Moorabi = Spirit Echo

Better because cannot be silenced or...Mass Dispel

And you instantly get the minions

More like Echo of Medivh