It's rather a tempo/curve nerf than a functionality nerf:
DHs can no longer have a 2/2 Battlefiend at turn 1. DHs can no longer trigger Glaivebound Adept at turn 5 (unless they previously equipped a weapon). DHs can no longer deal 1 AoE damage twice with Altruis the Outcast at turn 4 (now they have to wait till turn 6). DHs can no longer summon an Illidari Satyr (through Satyr Overseer) at turn 3 (unless they previously equipped a weapon). DHs can no longer play a 4/2 Furious Felfin with Rush at turn 2.
It's rather a tempo/curve nerf than a functionality nerf:
DHs can no longer have a 2/2 Battlefiend at turn 1.
DHs can no longer trigger Glaivebound Adept at turn 5 (unless they previously equipped a weapon).
DHs can no longer deal 1 AoE damage twice with Altruis the Outcast at turn 4 (now they have to wait till turn 6).
DHs can no longer summon an Illidari Satyr (through Satyr Overseer) at turn 3 (unless they previously equipped a weapon).
DHs can no longer play a 4/2 Furious Felfin with Rush at turn 2.