Just for a clear concept the players are Vampires and they are about to face a Beholder.
A Vampire has the Undead Type Traits: (p317 MM)
- No Constitution score
- Immunity to any effect that requires a Fortitude save (unless the effect also works on objects or is harmless)
The Disintegrate spell (p222 PHB) effects objects and states:
A creature or object that makes a Fortitude save is partially affected, taking only 5d6 points of damage
When a Vampire PC gets hit with Disintegrate, does it make a Fortitude saving throw? If so, what is the equation for this save?
If the Vampire were an enemy or NPC, would the result be any different?