As Bigby's interposing hand, except it moves and attacks as
directed by the character. (The character directs it as a free
action.) The floating hand can move up to 60 feet and can attack
in the same round. Since this hand is directed by the character,
its ability to notice or attack invisible or concealed creatures
is no better than the character's.
The hand attacks once per round, and its attack bonus equals
the character's level + the character's Intelligence, Wisdom, or
Charisma modifier (for a wizard, cleric, or sorcerer,
respectively), +11 for the hand's Strength score (33), -1 for
being Large. The hand's damage is 1d8+12, and any creature struck
must make a Fortitude save (against this spell's save DC) or be
stunned for 1 round. A stunned creature can't act and loses any
Dexterity bonus to AC. Attackers gain +2 bonuses to attack it.