The Lingering Potion of Harming (Instant Damage II) is a throwable item that creates a cloud on impact, dealing instant damage to any entity within its radius. Its effect is more potent than the basic version, reducing health of affected creatures more significantly. The lingering aspect means the cloud persists for a short duration, potentially harming multiple entities or the same entity more than once if they remain within the affected area.
The numerical item ID for Lingering Potion of Harming (Instant Damage II) is 441
Numerical item IDs will only work in Minecraft versions below 1.13.
The item ID for Lingering Potion of Harming (Instant Damage II) is minecraft:lingering_potion
This is the spawn command to give yourself Lingering Potion of Harming (Instant Damage II) in Minecraft which includes the Minecraft /give command. If you are using the Essentials plugin you will need to use /minecraft:give instead of /give