smbakeresq
Explorer
Just because I'm curious, how do you decide such things? Say I had the idea to play a max-sized goliath who was trying to live down the shame of having some hill giant blood in his family. Would you let me wield a greatsword in one hand?
(which is a legit question, but also perhaps getting at the same point Elfcrusher just made)
Been done already, 30 years ago in "The Whole Half Ogre" article and another article on using weapons of different size in Dragon Magazine. Goliaths, who have powerful build trait, get to use the next larger size damage die in my game, my son is playing a Goliath Paladin using a d12 Halberd. Bugbears (the monster version) have the same trait and get double damage, so my version of powerful build is far less.
Of course, you would have to have a weapon custom built for you, if you hand is large enough to use a greatsword in one hand than the balance would be off for a one handed user. The handle also wouldn't be thick enough, its not like you could just add some athletic tape to it. Weapon balance is also based on mass and momentum. For example, I cant use women's golf clubs, they are far to light and thin handled for me. Any really good hitter in baseball would struggle with a whiffle ball bat. Wonder why very tall basketball players struggle with free throws? Try shooting free throws with a volleyball, you will miss more.
I can use an axe (to cut down trees) one handed, however the balance isn't set up to do that so I have to shorten my grip for it to feel right. Watch Forged in Fury, look how they struggle with oddly balanced weapons even though they are the same size.
Finding the weapon maker to make such weapons could be a whole adventure. That person would also know their value, and would charge premium prices, 20 - 100x is about right. They would also need 2-3x the material, with admantine that could be expensive. Of course if a person had a weaponsmith or bowyer from their background that would greatly help. Magic Weapons would be ever rarer unless it resized to fit the wielder as some do, check the magical item descriptions. Otherwise the hope would be that a similar sized creature did that same thing.
Did I mention that if wearing a suit of armor it would of course have to be custom, that just don't have ++Sized Chainmail on the rack. Magical Armor of course, if it didn't resize to fit wearer, would need to worked on too. Maybe just cutting the hide off that dragon to make into armor would make more sense, the 3.5 e Draconomicon has rules for that. A shield would need to be bigger to cover the same effective area, a normal sized shield would only be +1 to AC maybe.
Just picking up any old greatsword to use one handed, nope. I can see you finding your sword early like Conan did, then leveling it up as you go up (devoting experience to the weapon instead of your levels, see Level Up Your Longsword, Dragon magazine, or just make up your own rules.) Or think of a good backstory and a good history and write it up, if its good enough you can start with that family hierloom (d4+d12) Great-axe. I use the d4+d12 because crits get extra damage die not dice, so you can use the d12 for the crits.
I also use crits as max damage on your weapon dice + the one more die you just rolled, so for that massive weapon you would get 16+d12. Works great, people love it until that Frost Giant crits 36+3d12, the rules work both ways...