Notes from author
The build focuses on keeping a high armour + poise, whilst still having good attack/cast speed and the ability to move fluidly in a fight. I've kept the level to a reasonable amount, however by end game I would usually find myself increasing some stats. Because this build focuses on mobility and stamina regen, endurance is a good option, but only once you've reached the other stats that you need to reach (the ones I've shown on this build). From there onwards, Strength is the stat to increase. This will further increase your melee damage output. I've added the Uchigatana because in my preference it has a very swift and easy to use moveset. It's range isn't better than the great scythe, but it works well with a good amount of stamina (more hits) after just using the black flame pyromancy, seeing as you have to get in close. The Uchigatana can be replaced with pretty much any other close range melee DEX weapon.
After increasing Endurance, then Strength, if you want to make yourself more tanky you can increase your vitality, although I would recommend increasing attunement so you carry more Pyromancies. The reason I've picked the pyromancies are...
Black Flame, because you can get in nice and close, use Black Flame and then slash with the Uchigatana.
Chaos Storm not only is an easy kill in rooms, it limits the enemies choice in movement by leaving lava, meaning you can get them easily with your Great Scythe.
Great Chaos Fireball is provides a bit more range than the other attacks, and also leaves lava at the ground, which means an experienced player can you a well aimed shot to block off a hall way.