I know that neither of the two relic buff druid spells can be cast on any levels, nor the ancient regen.Also, I know that all Relics are exempt from this rule, and I have heard that Ancient spells are as well, but I'm not positive on the Ancient.
Eredhel said:/group autorejoin on/off can help with players getting kicked from the group when zoning. It is an automatic invite when they zone back in...unless the group is full. Use /group autorejoin on/off