Vengeful Spirit
Creature Type: Undead
Size: Medium (about 4–7 feet tall) or Small (about 2–4 feet tall), chosen when you select this species.
Speed: 30 feet
Incorporeal Movement. You can move through other creatures and objects as if they were Difficult Terrain. You take 5 (1d10) Force damage if you end your turn inside an object.
Thunderous wrath. You can use a Thunderwave spell using Charisma, with proficiency bonus as limit, that resets on a Long Rest. At level 3, you also learn Shatter spell.