| Cryosphere01 |
The Ghast Stiletto is an interesting example.
Generally I would run it that an item that you are wielding that casts an emanation, you can still choose to exclude yourself from the area as long as you are at the center of it. You couldn't choose to exclude a different creature or other potential target even if they were in the same space as you, and you couldn't exclude yourself if you are in the area and no longer at its center - as is normal for emanations.
This doesn't come up with things like a Wand of Bless because the wand is just providing power for the spell. The caster is still casting the spell.
But if there was a brooch or something that had an envision activation that casts 3-action Heal, I would still let the caster choose to exclude themselves if desired.
Now for the Ghast Stiletto: from the RAI line it is pretty clear that the emanation is coming from the target creature, not the wielder of the item. The target creature is also always affected since it explicitly states that. So yes, the wielder of the Ghast Stiletto is going to be subjected to the stench and resulting save and effect once they use the item's ability.
I see this being useful for a hit-and run type of character. Something like a spellcaster that wants to have something nasty to use on an enemy that closes in for melee attacks. Enemy comes in and hits them, instead of immediately running away on their turn, they hit them with the Stiletto and then run.
This was my thought on it but I wanted to double check with those more familiar with pathfinder rules in case I missed something. Thank you for your input