druid--elements.md

Circle of the Elements

Druids of the Circle of the Elements are champions of nature. They seek to unleash its immense fury against its enemies, and share their own awe at its immense power with the world. Instead of living in harmony with some region, they seek out the extremes of the world - glaciers, deserts, volcanos, the depths of the sea - spend time there, and learn the secrets therein.

Damage types are associated with particular elements thusly:

Acid and Bludgeoning: Earth
Thunder and Slashing: Air
Cold and Piercing: Water
Fire and Lightning: Fire

Elemental Affinity

When you select this Circle at 2nd level, choose one of the four elements: Fire, Water, Air, Earth. You gain access to additional spells depending on the element chosen. You may choose a different element when you gain a druid level. Each spell becomes available to you only when you have slots with which you could cast it.

Level	Fire	Water	Earth	Air
Cantr	Fire Bolt	Frostbite	Acid Splash	Gust
1st	Burning Hands	Fog Cloud	Earth Tremor	Feather Fall
2nd	Flaming Sphere	Misty Step	Earthbind	Warding Wind
3rd	Fireball	Sleet Storm	Wall of Sand	Fly
4th	Wall of Fire	Watery Sphere	Stoneskin	Greater Invisibility
5th	Immolation	Cone of Cold	Wall of Stone	Steel Wind Strike

Elemental Efficiency

Beginning at 2nd level, you may cast spells given by your affinity without spending a spell slot. You may cast spells totalling up to half of your druid level (rounded up) in this way before taking a long rest.

Elemental Focus

At 6th level, you gain greater control over the element you are attuned to. After rolling damage matching your affinity for a spell (of level 1 or higher) or for a spell granted by your affinity, you may choose to reroll all of the damage dice (once). Additionally, you may choose to protect a number of affected characters that you can see equal to your Wisdom modifier from that damage - they take no damage from that spell, though they are still affected by any other effects of the spell.

Elemental Protection

At 10th level, you become immune to the damage types associated with your affinity, and may use your reaction to make one ally within 10 feet of you who has just received damage of those types resistant to them until the end of your next turn.

Adaptation

Starting at 14th level, you physically take on some of the characteristics of your chosen element:

Fire: creatures within 15 feet of you are resistant to cold damage, adjacent creatures that hit you with a weapon receive 1d8 fire damage, and you may as a bonus action start or stop radiating dim or bright light for 30 feet (while doing so, you seem to be either made of glowing embers or actually covered in bright flames)
Earth: You are resistant to non-magical bludgeoning/slashing/piercing damage, and are able to cast Meld Into Stone without spending a spell slot - you may do this a number of times equal to your Wisdom modifier before taking a long rest.
Water: You have advantage on Dexterity saves, and can flow through openings as small as your eye, though it's a bit disturbing to watch. Every five feet moved in such a way takes 20 feet of movement, and you are vulnerable to lightning damage while in this form.
Air: You have a fly speed equal to your movement speed during your turn (if you end your turn still in the air, you will fall to the ground). You may cast Gust of Wind without spending a spell slot and using only a somatic compontent by blowing it from your mouth - you may create this gust a number of times equal to your Wisdom modifier before taking a long rest.