Realm Warden

A Realm Warden has attuned himself to be an extension of his/her favored terrain. Masters of using the areas that surround them to increase their power and further attune to nature. This affinity gives them great power to defend this habitat of theirs to deadly levels.

Natural Affinity

When you choose this archetype at 3rd level, you learn one cantrip of your choice from the druid spell list.

Improved Favored Enemy

At 3rd level, you deal extra damage to your favored enemies. Whenever you damage a favored enemy with a weapon attack or spell, you can choose to increase the damage of a single roll by an amount equal to your proficiency bonus.

Climitization

At 7th level, while you spend at least one hour in your favored terrain, you may change one of your favored enemies to a different type. This new type must be one you have fought, observed for more than an hour, or have tracked for more than one hour. You do not gain a new language when you change this favored enemy and you may not use this feature again for 7 days.

In addition, if you have spent at least one hour in one of your favored terrains, your proficiency bonus is increased by +1. (This bonus lasts for as long as you remain in your favored terrain.)

Leylines

At 11th level, when your Spellcasting feature lets you learn a Ranger spell of 1st level or higher, you can choose the new spell from the Ranger spell list or the Druid spell list. You must otherwise obey all the restrictions for selecting the spell, and it becomes a Ranger spell for you.

In addition, choose an affinity for the source of your natural power:  Arctic, Coast, Desert, Forest, Grassland, Mountain, Swamp, or The Underdark. You learn an additional spell based on that affinity, as shown below. It is a Ranger spell for you, but it doesn't count against your number of Ranger spells known. If you later replace this spell, you must replace it with a spell from the Druid spell list.

Affinity	Spell
Arctic	Ice Storm
Coast	Control Water
Desert	Wall of Fire
Forest	Giant Insect
Grassland	Polymorph

Mountain	Stone Shape
Swamp	Blight
The Underdark	Charm Monster

Conduit of Nature

At 15th level, you gain additional spell slots. At the end of a long rest, you can create a number of spell slots equal to your Wisdom modifier.

(For example, if you Wisdom modifer is +3, at the end of a long rest, you can create one 3rd level spell slot, one 2nd and one 1st level spell slot, or 3 1st level spell slots.)

These spell slots may only cast Ranger spells or those granted to you by your Climitization feature.