How do I effectively use a beheeyem with power and defense trick?
To be honest, you don't need to use the split moves on him, not a very good idea.
Beheeyem (M) @ Leftovers
Trait: Analytic
EVs: 4 HP / 252 SAtk / 252 SDef
Quiet Nature (+SAtk, -Spd)
Calm Mind
Psychic
Recover
Shadow Ball
Role: Special Tank