Oakheart

Casting this spell creates a link between the caster or a touched being and an oak tree. The oak tree can be any distance from the spell recipient when the spell is cast and during its duration, so long as the spell recipient remains in Faerun.

At any time after this spell is cast, crushing the material component causes the spell to activate. For the next three rounds, any damage done to the spell recipient does not harm him or her, but instead affects the distant oak tree. The tree mystically becomes the target of all spells and the victim struck by all attacks. If the tree is dead before the spell is cast, the spell does not work, and the caster knows this, although the spell is lost. If the tree dies of the damage done to it during the oakheart spell, the linked being suffers a permanent loss of 3 hit points. The recipient of an oakheart spell does not regain hit points through rest until the tree is entirely healed because while it is injured, it receives the linked spell recipient's naturally healed hit points. The spell recipient can be magically healed during this time, though. A being may be linked through oakheart to only one oak tree at a time and can only have one oakheart in affect at a time.

The material component of the spell is an oak leaf. The recipient is linked to the tree from which the leaf came. Note that a fireward spell cast on the leaf at any time before it is crushed renders the distant oak immune to fire damage until the leaf is crushed.