Hearthpwn

You coin or prep, play the original spell, then play Shadowy Reflection if you still have enough Mana left to play it for full Mana cost of the last card you played. It continues to transform in your hand like Shifter Zerus but apparently leaves your hand at the end of the turn, so the only way to double cast 10 cost cards is having Naga Sea Witch already on the board.

It leaves your hand at the end of your turn? Disappointing.

That also means it can be milled if you start a turn with 10 cards in hand....

Every time, comparable to Shifter Zerus. However, apparently someone saw Mike Donais post on Reddit that Shadowy Reflection leaves your hand at the end of the turn but I haven't seen the actual post yet. This would mean no double N'Zoth or anything crazy that costs more than 5 mana, which if true is disappointing.

Shadowy Reflection is like Shifter Zerus - it will keep transforming until you play it, so it will copy the combo activator but then transform into a copy of the next card you play.

Why isn't the pack change in the Hearthstone client patch notes? Or is this only a server side change?

Hopefully it looks at the discounted cost, otherwise this won't work as well. Looks very fun and it would work with Battlecry minions in a way that Molten Reflection doesn't. Rogue would have loved to have this card imo, but Swashburglar might get you a copy in the Mage match up.

Quote from KeMT >>

They gave it to Savjz ?

Mill Rogue hero power incoming

I like the Medivh, the Guardian synergy you just suggested. Aside from defensive secrets, because you are getting an 8-cost minion, Effigy might see play as it would give you another 8-cost for free from either Medivh or the random 8-cost from the Atiesh dying. Duplicate sounds tempting for the value but getting double 8-cost minions seems slow.

Quote from CarpRunner >>

Why is everyone thinking you will need lots of card draw in your deck to make this work? If you are going into control matchups, don't you think your opponent will also have card draw in his deck?

Quote from SchruteBucks >>

I like the idea of playing this and then Hemet, Jungle Hunter. 

I think this won't be an automatic turn 7 play.  You'll want to evaluate what cards you've already drawn as well as what cards you'd be adding from your opponent's deck.   

Quote from EZJC >>

For example, I was playing a mage and muligan'ed into Murloc Tidecaller, Grimscale Chum, Rockpool Hunter and Hydrologist.  In this game I played tidecaller, coined up and played grimscale (who buffed rockpool).  Both survived and on turn 2 I played rockpool and buffed Tidecaller.   

If you cast Deadly Poison before Phantom Freebooter, then yes you will gain those extra attack stats because they are on the weapon. An example of something that won't work with Phantom Freebooter is Envenom Weapon, which is an effect, not a stat.

An Eternal Servitude Barnes meme combo would be more interested I think in Blood of The Ancient One. After the Barnes copy pulls the original Y'Shaarj, what minion is left to pull from the deck? Priest doesn't have Gang Up to put more Y'Shaarj's into the deck to keep the value going, so this combo isn't really that useful at this point in time until they do.

This is a rather niche card at best until some overpowered zero to low attack minion incentivizes someone to try building around it. Potion of Madness is a strong disincentive to try though, particularly in arena.

Summoning Stone in Wild is probably the most interesting attempt to get value out of an unbuffed Meat Wagon but this would have the same or worse reliability to any Barnes Combo deck.

Quote from Oshigawa >>

This is going to be run two of, that extra few health points combined with removal is what rogue misses against extremely aggressive matchups, such as pw. Not to mention combinations with deadly poison and leeching poison, and plague scientist for board clears which rogue never had (ghoul/sally/tentacle), oh, can't wait. Just to make it clear, i'm not saying it will be tier 1, but it will be good, something different than the usual miracle stuff.