Earthshaker

Unreleased

Terra's Keyblade is a Keyblade used by Terra during his quest to find Master Xehanort.

Terra is shown summoning his Keyblade differently than how most wielders do. Like Ven and Aqua's Keyblades, it lacks a keychain. These two facts are speculated to be related.

Kingdom Hearts II: Final Mix
The Lingering Sentiment uses this Keyblade to fight Sora after they save Disney Castle from the plunging darkness and so gives access to a wormhole in Kingdom Hearts II: Final Mix+.

During battle, the Lingering Sentiment can change the Keyblade into a whip, a jet-ski like object, a fast spinning cog-like weapon, and a massive cannon, among other formations, like making the Keyblade quadruple in size. It is unknown if Terra will have this ability in Kingdom Hearts: Birth by Sleep, or if it only appears in the Lingering Sentiment's boss battle with Sora.