I based the following on the bloodline feats for sorcerers out of the dragon compendium. I'm going for a thematic concept for a pathfinder game with some material converted from 3.5, but not necessarily an optimized one. Two spells were included for the first two levels primarily for thoroughness. Any thoughts? Specifically for the forth level spell. Is this something you would let players take in your games? Thanks!
Force Bloodline [Bloodline]
Prerequisite: Ability to cast arcane spells without preparation.
Benefit: Gain the following bonus spells known at each spell level, starting at 1st, according to the following list:
1 - Bigby's Helpful Hand (PHB2), Bigby's Tripping Hand (PHB2)
2 - Bigby's Striking Fist (PHB2), Bigby's Warding Hand (PHB2)
3 - Bigby's Disrupting Hand (PHB2)
4 - ?
5 - Bigby's Interposing Hand (PHB)
6 - Bigby's Forceful Hand (PHB)
7 - Bigby's Grasping Hand (PHB)
8 - Bigby's Clenched Fist (PHB)
9 - Bigby's Crushing Hand (PHB)
Characters with Force Bloodline cannot learn or cast spells with the [sonic] descriptor.
Force Bloodline [Bloodline]
Prerequisite: Ability to cast arcane spells without preparation.
Benefit: Gain the following bonus spells known at each spell level, starting at 1st, according to the following list:
1 - Bigby's Helpful Hand (PHB2), Bigby's Tripping Hand (PHB2)
2 - Bigby's Striking Fist (PHB2), Bigby's Warding Hand (PHB2)
3 - Bigby's Disrupting Hand (PHB2)
4 - ?
5 - Bigby's Interposing Hand (PHB)
6 - Bigby's Forceful Hand (PHB)
7 - Bigby's Grasping Hand (PHB)
8 - Bigby's Clenched Fist (PHB)
9 - Bigby's Crushing Hand (PHB)
Characters with Force Bloodline cannot learn or cast spells with the [sonic] descriptor.