Serpent's Lair

Dragons are not claw/claw/bite creatures and should never rush blindly into a battle. They are dangerous enemies and wayward adventurers should be afraid of them the same way they are afraid of Beholders, Mind Flayers, and Medusas. The common attribute of the 3 previous enemies is that their intellect is a key component of their danger. Dragons, due to their massive thick bodies and powerful physical attacks may be treated as a sponge for punishment that can quickly keel over given enough firepower. Dragons have many special abilities associated with them that they can use to horrify enemies, but one thing that is common amongst all of them is their lair. As blunt as the dragon may be, they are still very smart creatures and will use tactics and strategies in their battles.

You carry an aura around you called the Serpent's Lair when you are a dragon, with the range of a mile. When combat begins, add Serpent's Lair with initiative 20. On the the lair's turn, you can use a lair action, targeting only hostile creatures. If it deals damage, the damage is magical and does a bonus amount of damage dice equal to your wisdom modifier. If it requires a saving throw, it uses your spell save DC instead. These lair actions can be found in the statblock descriptions, and you can't take the same lair action twice in a row. If your form doesn't have lair actions, you can do one of these actions at the Serpent's Lair turn.

1. You can cast a Cantrip of any kind.
2. You can move half your movement speed.
3. You can attempt to recharge an ability that requires a dice roll, such as a dragon's breath.
4. You can cast a druid spell with a range of self, or a spell that the dragon from knows.

You can use regional effects of the dragon form. They extend to the rage of the aura. They can only be used out of combat and can only affect creatures you can see, at your discretion.