Dark Dwarf (Duergar)

Enlarge (recharges after long rest)
For 1 minute, you magically increases in size, along with anything you are wearing or carrying. While enlarged, you are Large, you double your damage dice on Strength-based weapon attacks, and you make Strength checks and Strength saving throws with advantage. You cannot use the Enlarge ability if you do not have the space to become large and the effect cannot be ended prematurely.