Boon of the Stormborn

D&D 2014 boon: Boon of the Stormborn. Source: Dungeon Master's Guide (2014). boon type Boon You have immunity to lightning and thunder damage. You can also cast thunderwave (save 15) at will, without using a spell slot or any components.

Source: Dungeon Master's Guide (2014), p. 232 - Licenses and attribution