From The Heroes of Might and Magic III wiki

Town: Necropolis

[[Image: ]]	Attack Skill	19	Damage	25-50
	Defense Skill	17	Health	200
	Speed	14	Shots	0
	Growth	1	Cost	3000 gold + 1 mercury
Special: Undead + -1 to enemy Morale + 20% chance to Age enemies + Counts as dragon

[edit] Dwelling

Ghost Dragon is recruited in Upg. Dragon Vault.

[edit] Upgrading

This is the upgraded version of Bone Dragon.