Tempest cleric

Hobgoblin +4

Vulnerability and resistance

Smart Brail,

I’ve spent time with other sages to understand how to apply this tricky case and I guess to have the answer for you.

All is described in PHB p.197 , in particular:
“Resistance and then vulnerability are applied after all other modifiers to damage.”
Example: If your Skeleton take 20 damage from Bludgeoning, first apply resistance (10dmg) and then vulnerability (10dmg x2).

The total is 20, so your skeleton take normal damage.

Hope this help.

Epic Sorcerer Spell Bombardment

Magic weapon critical