Its
attack bonus to make contact equals your
caster level + your Intelligence, Wisdom, or Charisma modifier (for wizards, clerics, and sorcerers, respectively), +10 for the hand's Strength score (31), -1 for being Large. Its
grapple bonus is this same figure, except with a +4 modifier for being Large instead of -1. The hand holds but does not
harm creatures it grapples.
The
grasping hand can also
bull rush an opponent as
forceful hand does, but at a +16 bonus on the Strength check (+10 for Strength 35, +4 for being Large, and a +2 bonus for charging, which it always gets), or interpose itself as
interposing hand does.