Circle of the Dragon

The Circle of the Dragon were blessed (or cursed, some may say) with the blood of the ancient reptilian behemoths through a ceremony millenia ago. These druids have stayed in secret trying to hide their true identity from prying eyes, but they see their more powerful forms as useful tools to protect the untamed wilderness and scare away unwanted visitors.

Members of this Circle rarely meet or encounter each other, though they are easy to distinguish as their dedication to the circle is shown by their physical closeness to dragons, as they grow scales, powerful tails, and leathery wings.

Dragon Forms

When you choose this circle at 2nd level, you gain the ability to use your Wild Shape to transform into a true dragon with a challenge rating (CR) as high as 1. You can use this feature once and regain the ability to do so when you take a short rest.

When in dragon form using this feature you cannot use any of your form's natural speeds other than its walking speed or normally use your breath weapon action.

You must expend a spell slot of 1st level or higher to use your breath weapon action while in this form.

Starting at 6th level, you can transform into a dragon with a CR as high as your druid level divided by 3, rounded down. Additionally when you transform into a dragon using this feature you can now use your form's speeds other than walking, but it's flight speed is half what it normally would be.

Starting at 10th level, when you transform into a dragon using this feature you can fly at your form's normal speed.

Draconic Blood

At 6th level parts of your skin are covered by a thin sheen of dragon-like scales. When you aren’t wearing armor, your AC equals 13 + your Dexterity modifier. You learn to speak Draconic if you don't already know it

Additionally, as a bonus action you can manifest (or sheath) sharp draconic claws. These claws are natural weapons, which you can use to make unarmed strikes. Attacks made with your claws can use either your Dexterity or Strength modifier. If you hit with them, you deal slashing damage equal to 1d6 + your chosen modifier.

True Dragon

At 10th level you can expend two uses of Wild Shape at the same time to transform into a true dragon with a CR of 6 or lower. You may use this feature once without consequences and regain the ability to do so when you take a long rest. If you use this feature another time before you take a long rest you gain a level of exhaustion when the transformation ends.

The violence of this change causes you to lose concentration on any spell you were concentrating on before you transform.

Your power slowly grows as the blood of the dragons takes over your own blood. The challenge rating of the dragon you can transform into using this feature increases at certain levels, to 7 at 11th level, 8 at 13th level, 9 at 15th level, 10 at 17th level and 13 at 20th level.

Power Unleashed

At 14th level the true power of the dragons unlocks within you. If you haven't used True Dragon or expended a spell slot of 5th level or higher since you last took a long rest you can use your action to transform into a true dragon with a CR equal to your druid level or lower.

This transformation lasts for 1 minute. When this transformation ends you suffer three levels of exhaustion and lose the ability to transform into dragons using this subclass's features or cast spells of 5th level or higher. You regain these abilities when you take a long rest.

Strength of Legends

Also at 14th level, dragon blood begins to overpower your true being. At first glance many may mistake you as an odd upright wyrmling dragon. Your wings finally become strong enough to support your weight even in your normal form, granting you a flying speed equal to your walking speed.

True Dragons In this context a "true dragon" means a dragon that is either chromatic or metallic. This excludes other creatures that are of the dragon type such as dragon turtles or wyverns.

Credit: Jian Guo http://www.blizz-art.com/illustration/7575/