Main strategy: Put between turns damage counters on your opponent's Pokémon with an ability with Froslass
Then you can attack with Brute Bonnet and make 50 more damage for every damage counter on your opponent's Active
Pokémon
Attach Energy with Dark Patch and Professor Sada's Vitality
Key cards: Froslass - Put damage counters on your opponent's Pokémon with an ability
Brute Bonnet - Main attacker
Professor Sada's Vitality/Dark Patch - Energy attachement