Half Elves, Half Orcs and Humans all have the following favored class bonus available for Shamans:
Shaman: Add one spell from the cleric spell list that isn't on the shaman spell list to the list of spells the shaman knows. This spell must be at least 1 level below the highest spell level the shaman can cast.
Thats right, you can do customized expansion of the shaman spell list, from cantrips to level 8 spells...
The Shaman spell list. (scroll down)
What would you add with this FCB?
Cantrips: Not worth it...
1st lvl: Murderous Command, Shield of Faith
2nd lvl: Protection from Alignment (Communal), Sound Burst
3ed lvl: Paragon Surge (if 1/2 Elf), Invisibility Purge, Resist Energy (Communal)
4th lvl: Freedom of Movement, Summon Monster IV
5th lvl: Plane Shift, Boneshatter,
6th lvl: Summon Monster VI, Word of Recall
7th lvl: Waves of Ecstasy, Alignment Word
8th lvl: Summon Monster VIII, Nine Lives, Create Demiplane,