50 damage was not added to Scizor's "Gale Thrust" attack.

Scizor's "Gale Thrust" attack does an additional 50 damage when Scizor is moved from your Bench and becomes your Active Pokémon during your turn.

If your Pokémon is Knocked Out during your opponent's turn and Scizor becomes your Active Pokémon, or Scyther moves from your Bench and becomes your Active Pokémon and then evolves to Scizor, the damage is not added.