Enchanted Hat
From Inkipedia, the Splatoon wiki
The Enchanted Hat is headgear in the Splatoon series.
It is a 2-star item produced by amiibo and comes with the primary ability Ink Saver (Main). It is only available from the Octoling Girl amiibo. It cannot be ordered from another player.
Appearance
The Enchanted Hat is a black witch's hat that has the inside of the hat and the tip of the hat change color to match that of the wearer's ink.
Splatoon 2
Abilities
The Enchanted Hat comes with Ink Saver (Main) as the primary ability. As a 2-star item, the Enchanted Hat comes with two additional slots for secondary abilities, which may be increased to a maximum of three slots with a Super Sea Snail for each slot. Since it is made by the amiibo gear brand, it has equal chances to roll any secondary ability.