I feel like the TCG and Video Game should be more involved with eachother, so I based my list around that.
Forretress GX,
HP:240
Sturdy ability: can't be OHKO'd
Attack 1: Two steel two colourless: Gyro Ball, does 120+ the difference in HP of both actives. If your opponents active has 180 HP, it does 180 when he is at max HP
GX Attack: Free : Explosion, Forretress is knocked out, does 100 to 3 of your opponents Pokemon
Garchomp GX
HP:230
Rough Skin ability: when it gets attacked, put 4 damage counters on your opponents active pokemon
Attack 1: One fighting One water : Outrage, does 150, and flip a coin, if tails your active is confused
GX Attack : One fighting Two colourless : Double-Edge, does 200, flip a coin, if heads, your opponents new active can attack for free, with their weakest attack, and must attack Garchomp GX. If tails, your opponent is now confused, you take 50 more damage during your next turn.