[Occult Ritual] Create a variant of a "Inhabit Rune Giant" ritual

[Waldham]

Hello,

I need help to create a variant of the following ritual : Inhabit Rune Giant

Quote:

School necromancy; Level 6

Casting Time 60 minutes
Components V, S, SC (up to the Intelligence
modifier of the primary caster)
Skill Checks Knowledge (arcana) DC 26, 3 successes;
Knowledge (local) DC 26, 3 successes
Range 100 miles/character level of the primary caster;
see text
Duration 1 hour/character level of primary caster (D)
Saving Throw none; SR no
Backlash The primary caster takes 2d6 points of damage.
Failure All casters gain 1 permanent negative level and are
exhausted until that negative level is removed.
EFFECT
The ritual allows the primary caster to inhabit the body of a
rune giant that she knows firsthand as if using possessionOA.
The rune giant must be within 100 miles per character level
of the primary caster when the ritual is complete. The rune
giant receives no save against this effect. Unlike possession,
the primary caster can use all of her own abilities as well as
the rune giant’s abilities while possessing the rune giant, and
the primary caster can choose to use either her own or the
rune giant’s base attack bonus or base save bonuses. While the
primary caster inhabits the rune giant, the rune giant gains 5
bonus hit points per character level of the primary caster.

For the variant, the ritual will allow the primary caster to inhabit the crawling hand from the possessed Hand (hand's detachment feat).

1/ what are the modifications for the ritual above ?

2/ Same question for the same effect except as if using greater possession.

Thanks for your future help.

[Waldham]

up

[Coidzor]

1) So you want to possess someone else's detached hand? Or possess your own hand that is currently being possessed by another entity? Or possess anyone's hand and detach it regardless of whether they have the relevant feats?

2) Possession is a 5th level spell for Wizards and this example ritual is a 6th level ritual, so it's one higher than the base spell. Based on that, I'd be inclined to say that since Greater Possession is an 8th level spell for Wizards, then a ritual that is identical to the example just with Greater Possession swapped in would be a 9th level ritual. How that would modify what you want to do with hands would depend on your response to my earlier questions.