Icon of the One Eyed King

0: Depleted Relic: May be used as a spell focus. When used in this way, stores 1 charge per level of spell cast up to 5 charges.
0: When fully charged, deals +1d4 cold and +1d4 lightning damage until the end of the day, and Ignites a Rune. Eth, Yondar or Thume.
0: You may cast Armor of Agathys 1/day, with a level equal to your number of unlocked Runes. The spell has a duration of 24 hours.