The Spiked Armor can be found in Sword Coast Adventurer’s Guide, page 121.
This armor has 5 charges. While you wear it, you can use a bonus action to expend 1 or more charges to cast one of the following spells from the armor, targeting yourself: Jump (1 charge) or Levitate (2 charges).
This armor regains 1d4 + 1 expended charges daily at dawn.
Spiked armor is a rare type of medium armor made by dwarves. It consists of a leather coat and leggings covered with spikes that are usually made of metal.
The wearer has Disadvantage on Dexterity (Stealth) checks.