Aegislash

Aegislash runs a physical set leveraging Stance Change to shift between defensive Shield Forme and offensive Blade Forme mid-battle. King's Shield punishes contact moves by halving the attacker's Attack, creating strong disincentives for physical attackers. Swords Dance in Blade Forme sets up sweeping potential, while Shadow Sneak provides priority Ghost STAB and Gyro Ball hits hard given Aegislash's very low Speed. Serious nature preserves all stats equally with no negative drawback, and Leftovers recovers HP passively. The 32 HP and 24 SpD spread keeps it alive in Shield Forme against special threats.