So I have been looking at some builds and had some questions about increasing damage from a weapon. Obviously you can magically enhance the weapon as well as make it bigger but, after a certain point the damage charts dont show what you would use. Example: A fighter using a Bastard Sword would deal 1d10, make the sword large and its 2d8, now increase his size with enlarge person and he swinging an Enlarged Large sword (Huge) for 3d8. If he has the spell lead blades cast on him that would make his sword deal damage as if it were one size category larger. The problem is that the chart doesn't go into 3d8. Now, if you were to follow the pattern of the chart it would either be 4d8, 3d8+2d6 or 6d6. The first seems illogical because 4d8 is what you get from 2d10 and the only time that you have the same increase on the chart is when the dice max at the
same damage (1d8 and 2d4 both become 2d6 etc.) The second seems unlikely simply because that would use 2 types of die just for the weapon with no abilities as well as the fact that 3d8+2d6 maxes at the same as 6d6. Any thoughts on how the final result in damage would work would be greatly appreciated.