Ghost

=Ghost= Ghost are the most common hostile mobs that spawn in dark or dimly lit areas, and will attack the player by slowly moving toward them and inflicting damage by making contact.

How to have ?
Ghost have a speed of 0.30D(same speed as us), a life of 14 hearts, and when he attacks, he it takes us 1.5 heart.

Drops
When ghost die, he drop between 2 and 6 Gray Paper.