Happy to see any and all 1 mana spells become 2 mana for druid. They kept getting a cost reduction of 1 to make them all cost 0. Making druid spend mana instead of mass casting 0 costs is extremely important to their balance.
Yogg nerf affects non-druids more than druid. Yes, Druid got it off for 0 mana easy, but they have the mana to cast it early anyway. Especially nerfs rogues.
The purpose of the card is still there. It needed toning down.