Yagura:SRD:Table of Scaling Combat Bonuses

Table: Scaling Combat Bonuses

Attacker Is	Attack Modifier	Damage Modifier1, 2	Special Attack Modifier3	Special Conditions
Five sizes smaller	+16	-16 4	-64	You must enter the creature's space to attack it. Limb damage only.5
Four sizes smaller	+8	-8 4	-32	You must enter the creature's space to attack it. Limb damage only.5
Three sizes smaller	+4	-4 4	-16	You must enter the creature's space to attack it. Limb damage only.5
Two sizes smaller	+2	-2	-8	You must enter the creature's space to attack it.
One size smaller	+1	-1	-4
Same size	-	-	-
One size larger	-1	+1d6 (+2)	+4
Two sizes larger	-2	+2d6 (+4)	+8
Three sizes larger	-4 6	+4d6 (+8)	+16	You are considered to have Improved Grab against your target. You can throw most targets as if they had a range increment equal to your space size.
Four sizes larger	-8 6	+8d6 (+16)	+32	Attacks with melee weapons are resolved as touch attacks. You are considered to have Improved Grab and Trample against your target. You can throw most targets as if they had a range increment equal to double your space size.
Five sizes larger	-16 6	+16d6 (+32)	+64	Attacks with melee or ranged weapons are resolved as touch attacks. You are considered to have Improved Grab, Trample, and Swallow Whole against your target. You can throw most targets as if they had a range increment equal to four times your space size.
Damage modifier is applied once for the weapon, and then once more for each bonus die rolled that does not come from precision damage. A bonus die from the flaming property thus qualifies, while sneak attack does not. Two-handed weapons add the damage bonus listed in parenthesis in addition to the base damage. One-handed weapons wielded with two hands do not receive this benefit. This modifier applies to the bull rush, grapple, overrun, and trip special attacks. Unlike normal damage rolls, the minimum damage for these rolls is 0. Damage dealt to creature is applied to a limb that you can reach and not their normal hit point total (which may make the limb useless), unless you can reach the creature's vital areas. If you deal damage to the vital area of a much larger creature with a melee attack (because you climbed, flew, swam, or otherwise reached the vital area) you are considered two sizes larger for the purposes of your attack. Unlike normal attack rolls, a roll of 20 is not an automatic hit.