Qwilfish

Ability · Balloon Sting

Once during your opponent's turn, if Qwilfish is your Active Pokémon and is damage by an attack (even if Qwilfish is Knocked Out), you may flip a coin. If heads, the Attacking Pokémon is now Poisoned. Put 2 damage counters instead of 1 on that Pokémon between turns.

W · W

Flip a coin. If heads, the Defending Pokémon is now Paralyzed.

Weakness: Lightning · Resistance: none · Retreat: 1