The 5 mana spell, discover a spell dude, secret guy. Those i think wont see at least that much play so far that they would be 4 or more star cards. Also i guess the 2 and the 3 mana spell COULD flop buuut… i highly Highly doubt it. Also i can see a point in this new hero being below 4 star card for that it has some negative synergies with tracking and couple other spells and anyways has a weaker heropower that the current hero. All and all i think this new hero will be a 4 star card anyways because i truly feel it is for sure powerful enough for spell hunter and will as a bonus slightly raise the skillcap of the deck.

He p means the full on combo shudder shaman where you get your shudderwock back to hand at 1 mana so it is not quite as bad that you only have 5. Basically lets you win druid matchups with shudder. Often druids are just too fast with heir combo and kill you before you have collected all the pieces. This creates counter to that. On the other hand i still think that even though shudder shaman could run this in a deck to beat druids often i think, both druids and shamans will drop a bit in play rate because of this card. I agree the card is waaay more a counter than it is a buff to that deck.