Hearthpwn

Ayyyyy Baku Warrior auto-include!

And that's how they should make cards worth epic gemstones! It might be a way to help warrior go back into meta game.

Why hello there, better Moat Lurker....

Can be pinged with hero power in Mage.

Can be pinged with DK hero power in:
Mage, priest, Warlock, Warrior

Following standard cards kill it immidiately or "enable" it (I don't include the ones that would be a waste or were never used, I do include any Witchwood cards though, as we don't know for sure whether those are good or bad, But I don't assume that card would just be included to enable the doll, it should be useful even without the doll, also only 7 or less mana.):

Druid:
Moonfire - reduces combo potential, but hey druids lack big removal
Wrath
Lesser Jasper Spellstone
Hunter:
Flanking Strike
Houndmaster Shaw
Mage:
Dragon's Fury
Paladin:
Spikeridged Steed - silence bait, but oh well
Priest:
Shadow Word: Pain - this cards often useless in late game, this guy might make it relevant
Holy Smite
Auchenai Soulpriest - need to combine with hero power or Circle of Healing
Spirit Lash
Holy Water - it would work kinda
Rogue:
Backstab
SI:7 Agent
Doomerang - what if you haven't buffed your Kingsbane enough yet.
Cheap Shot
Shaman:
Fire Elemental - rather than dealing 3 damage you get a guaranteed kill for just 3 extra mana
Warlock:
Hellfire
Mortal Coil
Shadowflame
Demonfire - +2/+2 is sometimes not enough.
Ravenous Pterrordax - might be too slow for zoo though
Defile
Lesser Amethyst Spellstone
Dark Pact
Lord Godfrey - well the huge one can survive, also activator both ways
Warrior:
Whirlwind
Brawl
Slam - for emergencies
Shield Slam - sometimes you just don't have enough armor
Inner Rage - well I mean Doll can be kinda a backup for Execute in this combo decks
Blood Razor
Deadly Arsenal - probably a bad combo, but we don't know yet
Warpath
Neutral:
Baron Geddon - though you probably still just want to ping with your Jaina instead, but works for emergencies.
Defender of Argus
Wild Pyromancer - needs a spell though
Fire Plume Phoenix
Spiritsinger Umbra

I appreciate the effort put into this post

Don't forget the secrets which it could trigger.

Potion of Polymorph would be very frustrating, but can be activated by Explosive Runes, Snipe or Explosive Trap (if you have another minion to attack).

In wild it would be perfect against Sacred Trial

Well nobody runs Snipe so let's not consider taht.
Mirror Entity as well as Explosive Runes are actually countered by this (Mirror Entity copies the deathrattle, so you can just bump the enemy guys instead)

Explosive Trap is interesting interaction, but requires you to have a board.

The rest are wild secrets. I wasn't considering interaction in wild.

But yeah, I was not considering the way opponent can help you in killing this doll. Anything that requires some help from opponent is not simple enough way to trigger it...

This card is potentially very powerful in a control deck type.  Such as, Defile + this card, mop up the little cards (including the doll) kill the big buffed baddie.

We can try it right now with Defile and Explosive Sheep with having a 3 health minion on board. I'm pretty sure the Defile stops as the card essentially reads "deal 1 damage to every minion and if one dies from this, cast this again". Granted it's Blizzard so there is probably some form of inconsistencies in terms of coding.

Good point, but that unit is 1/1 so it would proc on the doll at the same time as the marked unit, so it wouldn't create an additional defile round.

This looks like a Babe.

What babe?

The Babe with the power.

What power?

The Power of Voodoo.

Who do?

You do.

Seems good at first glance. On a second take it's basically Corruption (a card that doesn't see play) with a 1/1 attached. You can ping it with mage but then it costs the same as Assassinate (another card that doesn't see play).

It might see some play in decks that want extra removal but I don't think it's going to be a common sight.

While its 1 mana slower than Polymorph it also has the potential to give you a Water Elemental from Frost Lich Jaina and leaves nothing for the opponent to potentially play off of (Spikeridged Sheep!)

and the doll can kill a tyrantus or other minion with the same ability

Awesome card for mage, especially big mage to replace polymorph so that you can run less low cost spells.

Could also be good in Odd Mage. Which might actually become a thing

Really glad it's effect is good, I like the art.

You forgot mage hero power (in death knight  mode it even gives you Water Elemental)

You forgot the most obvious easy ones, like just hero powering it down... with DKs hero power ping is even easier.