Fey Touched, Spell Attack

[Conrad Teufel]

I have a (level 2) Gnome Monk in my group. He took the Fey-touched, Heritage feat (see below). He choose Acid Splash as his cantrip. My question is on the spell attack modifier for Acid Splash. What Ability Modifier should he use? And what if any Proficiency Bonus should he use?

My ruling was; He uses his Charisma Ability Modifier because the heritage feat is in his blood. Not a learned Ability (Int), Not a Ability gain through experience (Wis). Monk do not get any casting Proficiency so he would get No Proficiency Bonus.

Fey-touched Gnome
The blood of the fey is so strong within you that you’re truly one of them. You gain the fey trait, in addition to the gnome and humanoid traits. Choose one cantrip from the primal spell list (page 314). You can cast this spell as a primal innate spell at will. A cantrip is heightened to a spell level equal to half your level rounded up. You can change this cantrip to a different one from the same list once per day by meditating to realign yourself with the First World; this is a 10-minute activity that has the concentrate trait

Love a second opinion on the ruling, Thanks in advance!!

[Abyssalwyrm]

As a rule-of-thumb, if character don't have his own spellcasting, and gain a innate-spell - charisma is his spellcasting modifier.

[Taja the Barbarian]

Chapter 7: Spells / Innate Spells wrote:

Source Core Rulebook pg. 302 1.1

Certain spells are natural to your character, typically coming from your ancestry or a magic item rather than your class. You can cast your innate spells even if you aren’t a member of a spellcasting class. The ability that gives you an innate spell tells you how often you can cast it—usually once per day—and its magical tradition. Innate spells are refreshed during your daily preparations. Innate cantrips are cast at will and automatically heightened as normal for cantrips (see Cantrips on page 300) unless otherwise specified.

You’re always trained in spell attack rolls and spell DCs for your innate spells, even if you aren’t otherwise trained in spell attack rolls or spell DCs. If your proficiency in spell attack rolls or spell DCs is expert or better, apply that proficiency to your innate spells, too. You use your Charisma modifier as your spellcasting ability modifier for innate spells unless otherwise specified.

If you have an innate spell, you can cast it, even if it’s not of a spell level you can normally cast. This is especially common for monsters, which might be able to cast innate spells far beyond what a character of the same level could use.

You can’t use your spell slots to cast your innate spells, but you might have an innate spell and also be able to prepare or cast the same spell through your class. You also can’t heighten innate spells, but some abilities that grant innate spells might give you the spell at a higher level than its base level or change the level at which you cast the spell.

A level 2 monk would roll (Cha modifier + 4) to attack with Acid Splash.

[Conrad Teufel]

thanks so much I knew I was missing something!!!