This Pokémon is both [F][D] type.
Poké-BODY: Poison Payback
If Dark Sandslash is your Active Pokémon and is damaged by an opponent’s attack (even if Dark Sandslash is Knocked Out), the Attacking Pokémon is now Poisoned.
[C][C][C] Swift: 50
This attack’s damage isn’t affected by Weakness, Resistance, Poké-Powers, Poké-Bodies, or any other effects on the Defending Pokémon.