Inis

Inis  is a Steel Weapon in the Witcher 3: Wild Hunt.

Weapon Specs

 * 148 - 180 Damage
 * +29 Armor piercing
 * +2% Critical hit chance
 * +3% Chance to poison
 * +1% Bonus experience from humans and nonhumans
 * 3 Empty upgrade slots
 * Level to use this sword: 16

Materials Obtained from Deconstruction

 * 2 x Leather straps
 * 2 x Dark steel ingot
 * 1 x Venom extract

Location

 * South of Eldberg Lighthouse (Hidden treasure under the boat in the water).
 * Video guide: https://www.youtube.com/watch?v=FVMuHYoAb0s