If Breloom gets sent to the Bench after using its "Spore Ball" attack, can it still use its "Powdery Uppercut" attack on the next turn?
Yes, because it is a game state check and not an attack effect.
Powdery UppercutSpore Ball




×2
Stampede
Spore BallYour opponent's Active Pokémon is now Asleep.
The mushrooms, known as tochukaso, are controlling the bug. Even if the bug bugs the mushrooms, they tell it to bug off.
If Breloom gets sent to the Bench after using its "Spore Ball" attack, can it still use its "Powdery Uppercut" attack on the next turn?
Yes, because it is a game state check and not an attack effect.