The find familiar spell description states:
When you cast a spell with a range of touch,
your familiar can deliver the spell as if it had cast the
spell. Your familiar must be within 100 feet o f you, and
it must use its reaction to deliver the spell when you cast
it. If the spell requires an attack roll, you use your attack
modifier for the roll."
It says I use my attack modifier from my character, but what about the abilities of the familiar? For instance, vultures have the Pack Tactics trait:
Pack Tactics. The vulture has advantage on an attack roll
against a creature if at least one of the vulture's allies is within
5 feet of the creature and the ally isn't incapacitated.
If I cast a spell with an attack roll and a range of Touch, and use my vulture familiar to deliver the spell, is the attack made with advantage thanks to the vulture's Pack Tactics trait?
Best Answer
Yes.
This means that your familiar is the point of origin of the spell. This is supported by the Jeremy Crawford tweet (mentioned by Slagmoth), where Jeremy tweeted:
What About That Modifiers?
Advantage/disadvantage based on sight isn't a modifier, it is advantage or disadvantage. You would still use your spell attack modifier instead of the creatures.
Advantage and Disadvantage section of the PHB never calls them modifiers. They follow after the Ability Scores and Modifiers section, but they are not a subsection of the modifiers. Advantage and Disadvantage affect the roll pre-modifiers.