Sableye
C - Scratch is a normal attack skill that deals 20 damage.
And P - Lost Mine is the key,
You can use it when you have 10 or more cards in your Lost Zone.
You can put 12 damage counters on your opponent's Pokémon as desired.
You can attack unevolved Pokémon on the bench,
Being able to adjust the damage in increments of 10 also looks really useful.
The compatibility with Rotom, who uses the Lost Zone, doesn't seem to be bad either!