Union Ragnarok (ユニオンラグナロク, Yunion Ragunaroku?) is a technique in Kingdom Hearts III. It allows the user to fire streams of brilliant light that fly at targets.
In Kingdom Hearts III, Union Ragnarok is the max-level Shotlock of the Starlight Keyblade. When activated, Sora Formchanges into Second Form S and fires a cluster of light at the enemy.