Dragon

Sword of Three Realms (The Collector, Task 37) - Obtain 4 War Dragon Fangs (After the meeting in Nagapur).
Can use a surprising attack on the field: Immobilize! (you won't be able to move, but can act).
Vulcanbreath every 3 turns unless it uses Desperate Wail.
Mend appears to only have a chance of occurring every Vulcanbreath turn +2. So if you saw Vulcanbreath at 6, then Mend has a chance of happening at 8 and 13, etc.
Numor Mine spawn is in the Undeveloped Zone (F-15), in one of the side areas you can access with the long lift.
Crookfen: You can see Dragon as soon as you enter Crookfen at (G-4). Note that this spawn point is shared with Evil Eye and Hydra. So just keep exiting and re-entering Crookfen until you see the Dragon left side of you.
Will be replaced by Dread Dragons once a target BR is reached:
- X360
  - Crookfen at BR45+
  - Numor Mine at BR53+
  - Aveclyff at BR70+
- PC
  - The Southwestern Road at BR40+
  - Aveclyff at BR70+

Drops