A Stage 1 Pokemon Card of type Lightning, Darkness with the title Dark Flaaffy and 80 HP of rarity Uncommon evolved from Mareep from the set Team Rocket Returns.  It has the attack Thunder Slash with the cost Colorless, the energy cost 1 and the damage of 10 with the description: If the Defending Pokemon is a Basic Pokemon, the Defending Pokemon is now Paralyzed. Dark Flaaffy can't use Thunder Slash during your next turn. It has the attack Headbutt with the cost Lightning, Colorless, the energy cost 2 and the damage of 20. It has weakness against Fighting 2. 
Dark Flaaffy