Old black dragon

Black Dragons are evil-tempered, cunning, and malevolent. Especially fond of coins, they often question their humanoid prey about stockpiles of gold before killing them.

Special abilities
An old black dragon has the usual dragon immunities to paralysis, mind-affecting, and sneak attack, and it has permanent true seeing.

This creature use its acid dragon breath thrice per day, and aura of dragon fear once per day. It can also cast fireball and lightning bolt twice per day and darkness thrice per day as spell-like abilities with a caster level of 7.