Ends of the Earth

The Gaia Bane (ガイアベイン) is a Keychain for Terra's Keyblade that is found in Kingdom Hearts Birth by Sleep. Like Terra's other Keyblades, it is is able to shift into multiple forms, including a whip, a jet-vehicle, a spinning-cog weapon, a cannon, and a gigantic Keyblade.

In Kingdom Hearts Birth by Sleep, Terra's Keyblade develops this form after he chooses Riku to inherit the Keyblade. Terra's Keyblade permanently takes this form once his body is stolen by Master Xehanort, and his heart and armor become the Lingering Sentiment. The Lingering Sentiment continues to use this Keyblade, even when it attacks Sora in Kingdom Hearts II Final Mix.