Headless Horseman

This mob has 500 health and is a boss. It appears in the forest in the overworld at night.

Behavior
The Headless Horseman is an extremely aggressive mob. It has a huge detection radius, even through blocks. It attacks by throwing pumpkins that cause an explosion that doesn't destroy blocks, but does 5 splash damage. The pumpkins can't be deflected. After 250 health is lost, it will throw its pumpkin head, which will explode with the radius of a charged creeper. It then circles the player at a short distance, throwing pumpkins.

Strategy
Stay out of the way of the pumpkins, maybe attack with ranged.

Drops
He drops brewing items, a pumpkin head (acts as a mob repellent) and diamonds.

SMP Death Message
(Player) lost his or her head