the way you have to look at this card is that if your opponent don’t remove a 12/12 he might die in 2 turn and if he kill it you summon a crap lot of damage wich also win you the game.
if you summon alex and nefarian whit this you get 16 damage so you don’t care about their effect.
basically your oppenent have to kill you when it is played cause there is no way he could kill all of the big minion it will played.
I think it suck to aggro deck and combo deck but it is OP to control deck.

this card is pretty bad because you loose all tempo for a not that good effect

sadly hobgoblin only work whit played minion so it don’t even work XD

in patron this might get really powerfull.
otherwise it just a worst echo.

if this work whit the hero power I think it could be fine.
otherwise I don’t it could be play