Gigalith 61

Card details

HP 150 · Fighting · Weakness Grass ×2

• Core Cannon — This attack does 20 damage to 1 of your opponent's Pokémon for each Fighting Energy attached to this Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
• Power Gem 90

“Compressing the energy from its internal core lets it fire off an attack capable of blowing away a mountain.”