Thor's Ire is an item from Fire Emblem: Rekka no Ken. It is a ring blessed by Thor, the spirit of Thunder. It can be used by either Nils or Ninian in order to use a dance or play a song that increases another character's critical hit percentage for a turn. It is hidden in a chest in Chapter 26xE/28xH.
Thor is the Norse god of thunder and the son of Odin, the king of the gods, in Norse mythology and is known for his lightning hammer Mjolinir.