Nature Domain 5E Cleric (Druid)

This is my attempt to create a "Druid like" Domain for use in my home game for my brother who ONLY plays druids. It was intended to add options to basic before the PH came out. I'm going to keep it around to expand on the basic game. 

Nature Domain

Domain spells:

Level 1 Mage Armor (bark skin), Sanctuary.

Level 3 Spirit Guardians (fey), Lightning bolt.

Level 7 Fire Storm, Regeneration.

Level 9 True Resurrection, Meteor storm.

Bonus proficiency: Nature

Animal companion: Druids start with an animal companion. List to come later.

Channel Divinity: Shape change
Starting at 3nd level, you can use your Channel Divinity
to a druid gains the ability to turn herself into any normal animal CR 1 or less and back again. The effect lasts for 1 hour per druid level, or until she changes back. 

Woodland stride Starting at 3rd level, a druid may move through any sort of undergrowth (such as natural thorns, briars, overgrown areas, and similar terrain) at her normal speed and without taking damage or suffering any other impairment.

 Balance of life
Beginning at 6th level, the druid may bond two friendly targets together. The bond lasts for a number of rounds equal to the Druid's level. Any healing spell cast on either bonded target heals the other for half the number of points. Any damage dealt to either is divided between the two. Druid must have a long rest before another bond can be made.

Elemental Strike
At 8th level, Any spell cast that does fire, lightning, or cold damage does extra 1d8 damage to
the target. When you reach 12th level, the extra damage increases to 2d8. If the spell does more than one type of damage only the fire, lightning, or cold damage does extra damage.

Channel Divinity: Healing Rain
Starting at 18th level, You can call a rain storm 60' radius. The rain continues to fall for a number of turns equal to the druids level. At the start of any friendly targets turn that starts within the rain heals hit points equal to the druids level. Channel Divinity: Healing Rain can only be used out doors and under an open sky.