Mastercraft

You have honed your crafting skills beyond that of many others. You gain the following benefits: 

• You gain proficiency in two tools of your choice.
• Choose one tools in which you have proficiency. You gain expertise with that tool, which means your proficiency bonus is doubled for any ability check you make with it. The tool you choose must be one that isn't already benefiting from a feature, such as Expertise, that doubles your proficiency bonus.
• When you make a skill check to use a tool with which you have proficiency, you may add a d4 to the roll.