Suppose I am standing on a ledge, say, 30 feet above an enemy who is unaware of my presence, and I want to jump onto the enemy with my spear. What bonuses to hit rolls and damage would I get for this jump attack, presumably based on the height I'd dropped? Would I take normal fall damage as well, and would I have to take any acrobatics checks in order to successfully hit the enemy? I'm playing with a group of people and GM who are fairly new to the game, and unsure of how to GM something like this.
