Kobold Press, Creature Codex, Tveirherja

The action, "Spear of the Northern Sky (Recharge 5-6)" has a typo so the attack doesn't parse correctly. "Range Weapon Attack. +7 to hit," s/b "Range Weapon Attack: +7 to hit", ie change the period to a colon after Attack.

Also "Curse Of The Tveirherjar (Recharge 6)" is in the Trait section. It's a bonus action and probably should be moved to that section on the NPC sheet.