Falling damage to creature you landed on

[Surtyr]

I know that when I fall in pathfinder I take 1d6 damage per 10', and that armor does not help but DR does.

Now lets say I am wild shaped into a Large or Huge creature and fall 30 feet onto their square.

I assume I take 3d6 damage from the fall, but how much does the creature I fell on take?
Does my increase size do extra damage to me or him per size category?
Does the poor sap get a reflex save to avoid some or all the damage he would take from a sassy druid in Behemoth Hippo form (Huge)?

What do you think?

[DM_Blake]

I failed to find a rule for this.

Real world physics don't apply here (e.g. a mouse can fall from the roof of a high-rise building and walk away from the fall but a human cannot and an elephant would not likely survive a fall of more than a few feet)...

Everything in Pathfinder takes 1d6 falling damage per 10' regardless of how big it is. Things falling onto a "yielding" surface (e.g. mud) reduce the damage by 10' of fall. If you jump rather than fall, you can attempt a DC 15 Acrobatics check to turn the first 10' into non-lethal damage. That's how I would calculate your damage.

So jumping down from 30' means you take 1d6 non-lethal and 1d6 lethal damage if you make the Acrobatics check and land on a yielding surface (which I interpret a squishy enemy to be).

This is your damage regardless of whether you're a mouse or a druid or an elephant. Yeah, that's the simplified Pathfinder ruleset.

Calculating the damage to the enemy is more difficult. An entire dungeon ceiling that collapses and totally buries a guy only does 8d6 damage, half if they make a DC 15 Reflex save. So I would use that as a guide. If you are big enough to "bury" the enemy you fall on, I would use the same damage calculation. If you are smaller than that, I would adjust the 8d6 down proportionally (e.g. human size is about half the size you need to be to "bury" another human, so 4d6, save for half).

But that's all off the top of my head with no exact rule that I could find so I'm just extrapolating from other rules.

[bbangerter]

@DM Blake, you've slightly misremembered the rules on falling and jumping.

PRD wrote:

If a character deliberately jumps instead of merely slipping or falling, the damage is the same but the first 1d6 is nonlethal damage. A DC 15 Acrobatics check allows the character to avoid any damage from the first 10 feet fallen and converts any damage from the second 10 feet to nonlethal damage. Thus, a character who slips from a ledge 30 feet up takes 3d6 damage. If the same character deliberately jumps, he takes 1d6 points of nonlethal damage and 2d6 points of lethal damage. And if the character leaps down with a successful Acrobatics check, he takes only 1d6 points of nonlethal damage and 1d6 points of lethal damage from the plunge.

So if you deliberately jumps the effective fall distance is 10' less. And if you land on a soft surface another 10' is removed from fall damage.

[bbangerter]

PRD on falling wrote:

Falling Objects
Table: Damage from Falling Objects
Object Size Damage
Small 2d6
Medium 3d6
Large 4d6
Huge 6d6
Gargantuan 8d6
Colossal 10d6
Just as characters take damage when they fall more than 10 feet, so too do they take damage when they are hit by falling objects.

Objects that fall upon characters deal damage based on their size and the distance they have fallen. Table: Damage from Falling Objects determines the amount of damage dealt by an object based on its size. Note that this assumes that the object is made of dense, heavy material, such as stone. Objects made of lighter materials might deal as little as half the listed damage, subject to GM discretion. For example, a Huge boulder that hits a character deals 6d6 points of damage, whereas a Huge wooden wagon might deal only 3d6 damage. In addition, if an object falls less than 30 feet, it deals half the listed damage. If an object falls more than 150 feet, it deals double the listed damage. Note that a falling object takes the same amount of damage as it deals.

Dropping an object on a creature requires a ranged touch attack. Such attacks generally have a range increment of 20 feet. If an object falls on a creature (instead of being thrown), that creature can make a DC 15 Reflex save to halve the damage if he is aware of the object. Falling objects that are part of a trap use the trap rules instead of these general guidelines.

Granted falling creatures aren't objects, but you should be able to make a sensible ruling from the above.