Made for original game version 4.04
Full text manual: https://www.nexusmods.com/witcher3/articles/499
Video demos: https://www.youtube.com/playlist?list=PLORUiuEaZCehpITH6_5xkLjZIUp10D5j3

"Potato" in name is for easier search, to make it easier to distinguish from other cheats and mods.

With this mod you can change weapon and armor stats to almost whatever. Want to add freezing chance to a sword? Select this sword in inventory and use PIC_AddCraftedAbl('MA_FreezingChance'). Want to increase level of a sword, which became underleveled? Turn on PIC_ShowAbilities(1) and add to a sword some 'autogen' abilities (stats), which will increase its damage and level. Want to use a sword now, but its level higher than yours? Use PIC_RemoveCraftedAbl command to remove the same 'autogen' abilities, or add "negative" damage with PotatoItemCheats' abilities like 'PIC_slashing_dmg_-10', this will decrease weapon's level. You can remove default weapon/armor abilities entirely and assign to them any other stats you want. Got some relic item with random stats and want to know minimum and maximum of these stats of this item? Use PIC_ShowRandomStats(1). Want same item, but with maximum stats; or maybe minimum, or average? Select this item in inventory and use PIC_AddSelectedItemQ. Not satisfied with special crossbow bolts' damage? Select crossbow in inventory and use PIC_AddCraftedAbl('PIC_AttackPowerMult_10000')(+10000% attack power). With this, pathetic 8 damage of blunt bolts becomes 800. Want 100 bombs/potions without meditating? Select them in inventory and use PIC_SetAmmo(100). Want to drop some quest item, but game does not let you to? You can delete it with PIC_RemoveSelectedItem. Want to add few runewright enchantments at once to the same item? Use PIC_Enchant. Want to sell something to a merchant, but he does not have enough money? Meditate in front of him for a week. Select any item in shop and use PIC_AddMoney. Read full manual to learn what this mod can do and come up with your own ideas.

Commands list:
PIC_ShowItemNames( show : bool ) // shows item names in tooltips
PIC_ShowAbilities( show : bool )
PIC_ShowRandomStats( show : bool )
PIC_ShowRSQ( show : bool ) // random stats quality
PIC_ShowTags( show : bool )
PIC_ShowAll( show : bool )
PIC_ShowAvgDmg( show : bool )
PIC_AddCraftedAbl( ability : name, optional count : int ) // Adds/removes abilities (stats) to/from items
PIC_RemoveCraftedAbl( ability : name, optional count : int )
PIC_AddBaseAbl( ability : name )
PIC_RemoveBaseAbl( ability : name )
PIC_AddItem( itemName : name, optional count : int )
PIC_AddSelectedItem( optional count : int )
PIC_AddItemQ(itemName : name, quality : float, attempts : int, maxDiff : float, silent : bool ) // Adds an item with specific random stats quality (RSQ)
PIC_AddSelectedItemQ( quality : float, attempts : int, maxDiff : float, silent : bool )
PIC_RemoveSelectedItem( optional quantity : int )
PIC_SetDurability( durability : float )
PIC_SetAmmo( ammo : int )
PIC_AddTag( tag : name )
PIC_RemoveTag( tag : name )
PIC_Enchant( chant : name ) // add runewright enchantment
PIC_Unenchant( optional ec : name )
PIC_AddSlot()
PIC_SetItemModifierInt( n : name, v : int )
PIC_SetItemModifierFloat( n : name, v : float )
PIC_AddMoney( v : int )
PIC_RemoveMoney( v : int )
PIC_ExtractUpgrades()
PIC_RemoveOil()
PIC_DeleteLoot( range : float ) // Deletes bags and guts from dead NPCs in range around player
PIC_EmptyLoot( range : float ) // Empties all containers in range around player
PIC_ShowPlayerAbls( optional onlyInteresting : bool )
PIC_AddCustomBuiltSword() // example, how to make your own "add custom item" command