War stomp is a good racial ability for both PvP and PvE
Hardiness - Hardiness is a passive 15% resistance to stun and knockout effects. This is a good racial ability for both PvP play and PvE play. 15% seems small, but will add aion kinah up over your career as a shaman.
Command - This ability gives 5% damage increase to pets. This ability is useless as a shaman. The two elementals that are gained at higher levels are considered pets of the totem, not pets of the shaman.
Axe Specialization - Increases expertise by 1% with both one-handed and two-handed axes. This ability makes it so your swing is 1% less likely to be dodged or parried. The increase is minor. Even as an enhancement shaman, who would gain the most f Aion this ability, to always use an axe would limit and hinder you greatly.
Tauren
War Stomp - Stuns up to five enemies in a eight yard radius for two seconds. It has a 0.5 second cast time, and two minute cool down.
War stomp is a good racial ability for both PvP and PvE aspects of being a shaman. War stomp is considered by many to be the only crowd-control ability available to shamans. The two minute cool down allows it to be used often.
Endurance - Endurance is a passive racial ability that gives you 5% more hit points.
This is an all-around great ability. This will give upwards of 500 hp when you are talking high end PvP gear.