Sling of Giant Felling

D&D 2014 item: Sling of Giant Felling. Source: The Book of Many Things. type Ranged Weapon, Uncommon rarity, properties Ammunition, damage 1d4 bludgeoning When you hit a Giant creature with a ranged attack roll using this magic sling, the creature must succeed on a 18 Constitution saving throw or have the prone condition. 30/120 ft. Ranged Weapon Uncommon Ammunition

Source: The Book of Many Things, p. 68 - Licenses and attribution