Most likely, this is the Gliscor you are talking about:
Gliscor L.47 - Fighting - HP90
Stage 1 - Evolves from Gligar
Poke-Body: Bind Eye
As long as this Pokemon is your Active Pokemon, even if your opponent's Pokemon Evolve, De-Evolve, or Level Up, their Special Conditions aren't removed.
[C] Slash Turn: Flip a coin, if heads place damage counters on the Defending Pokemon until the Defending Pokemon has 10 HP remaining. If you place damage counters, return Gliscor and all cards attached to Gliscor to your deck, and shuffle your deck.
[F] Frictional Heat: 20 damage. The Defending Pokemon is now Burned.
Weakness: Water (+20)
Resistance: Fighting (-20)
Retreat: 0