Overzealous

[Skull Bash]

On Machamp or Ludicolo D's Overzealous pokebody it adds on 30 damage to their attacks if your opponent has an ex in play. Would that damage be before or after you apply weakness + Resistance from their attacks?

 

[Big Daddy Snorlax]

The effect resides on Machamp or Ludicolo D. Effects on the Attacking Pokemon always happen before W&R while effects on the Defending Pokemon always happen after W&R. The 30 is added before Weakness and Resistance is calculated.