
CalethosVB |

As a GM, I'm constantly building new and (hopefully) interesting creatures either to aid or hinder my players. One that I've come to like the idea of is a mobile dryad druid that shows up in the adventure in different locations as required by the plot to divvy out information or grant special boons or items. This dryad can move from location to location at will and is not bound to a 300 yd radius around her chosen tree.
I don't know if there are any third-party supplements that take care of this situation, but I've come up with the following compromise. Let me know what you think.
Mobile Dependence (general)
Prerequisites: Dryad, Tree Dependant
Benefits: You may take the Treesinger Druid (elf) archetype. You must gain a plant companion through this archetype.
You become bonded as Tree Dependant to your plant companion, with a range of 50 ft +10 ft per HD of your plant companion instead of 300 yards. Treat half your racial hit dice as druid levels for the purpose of determining your plant companion's abilities.
If your plant companion is killed or otherwise dies, or you dismiss your plant companion without making a new bond to another plant companion or a tree, you immediately become nauseated. After one hour and every hour thereafter, you must make a Fortitude save or become nauseated. This DC is equal to 10 + your plant companion's hit dice total when it died. After 24 hours, if you have not started the ritual to bond to a new plant companion or tree, you must make another Fortitude save with the same DC or suffer 1d6 points of Constitution damage. Each day you have not started this ritual, you must make this save again.
You may spend 24 hours and make a Will save (DC 10 + the adjusted hit dice of your new plant companion, or 10 + 1/2 your total hit dice if bonding to a tree) as per normal to bond to a new plant companion or to a tree. If your plant companion is dead or dismissed during this time, you are still sickened or nauseated but may perform the bonding ritual, and gaining the nauseated condition during the ritual does not disrupt its completion. After the ritual is complete, you immediately remove the sickened condition altogether, or reduce the nauseated condition to sickened for 1 hour.
Bonding yourself to a tree increases your Tree Dependent radius to 300 yards.

Phasics |

Nothing against your idea but if this is a plot device character that exists to progresss the story for the characters then it really doesn't need rules.
It can move beyond tree range because it has to for the plot. Fluffy reasoning it's a rare unbound dryad gifted the ability to travel far to further X deities agenda.
Unless you have a dryad in the group, rules are not required.
But if you would prefer to keep within the rules for your dryad instead of home brewing something why not take this approach
The dryad is a regular dryad bound to a tree. But the tree gets teleported by someone/something and the dryad goes along with it .
After a while the group may recognise the tree before they see the same dryad which would be a cool way to let them know they were safe even in an area which just before seemed very dangerous.

CalethosVB |

Nothing against your idea but if this is a plot device character that exists to progresss the story for the characters then it really doesn't need rules.
It can move beyond tree range because it has to for the plot. Fluffy reasoning it's a rare unbound dryad gifted the ability to travel far to further X deities agenda.
Unless you have a dryad in the group, rules are not required.
But if you would prefer to keep within the rules for your dryad instead of home brewing something why not take this approach
The dryad is a regular dryad bound to a tree. But the tree gets teleported by someone/something and the dryad goes along with it .
After a while the group may recognise the tree before they see the same dryad which would be a cool way to let them know they were safe even in an area which just before seemed very dangerous.
It's also a PC option.

Lathiira |

In Eberron, there was some type of living wood, that may have been its name, or greenwood, or something like that, which even if you cut the tree down it was still alive. Dryads bonded to those trees could manifest even from the pieces of the tree; may have been limited to the largest piece. If a tree got smashed to flinders or run through a wood-chipper or something, a small piece would still work. I eventually for giggles decided one of the dragonmarked Houses made a ship of the stuff, not knowing about the dryads. The dryads took over the ship, killed the crew, and became pirates. They really hated the salt water, but they had a fierce reputation on the seas :)