Venom Keyblade

This one actually came to me quite easily. The swirling black mass of the symbiote, the spikes/claws, & the razor-tongue (Venom's trademark of course) for the key.
The spider symbol was a pretty good fit for the hilt. And of course the hand guard would have to be the oozing black webbing. That keychain took me a bit to decide. Spidey's keychain was just a circle with his mask pattern on it, so I thought a web with Venom's eyes would be fitting.

So there it is. If Sora were ever to encounter Venom (not that I'd really like to see it happen) this would be his keyblade: The Savage Nemesis.
And you can check out my new Carnage keyblade here: [link]

Venom & Spider-Man are (C) Marvel
"Keyblade" and Sora are (C) Square Enix