Stygia's Frostbound Boots (5e Equipment)

Wondrous item, very rare (requires attunement)

Created by the son of Levistus and tempered in the Styx, black, metal boots with ice runes on them

• Curse of the Ice Prisoner, you gain resistance to cold damage, but whenever you take cold damage your speed is reduced by 10 feet until the end of your next turn.

• Gift of the waters of styx, no more than once per day when you fail a saving throw, you can succeed on the saving throw instead