* On PvP servers, may only be cast on players.
* Reduces the speed of hitched/ridden animals affected by the spell.
* If the power of an Oakshell is above 70, it will grow into a Thornshell and cause wounds like [[Aura of Shared Painshared pain]] where you wear no armor. The effect name won't change, though.
* While equipped, armor will render Oakshell inactive on that particular body part.