I made a gambit called the interplanetary ballistic missile

[Event "ChessPlayer097283 vs jhwim"] [Site "Chess.com"] [Date "2024-11-09"] [White "ChessPlayer097283"] [Black "jhwim"] [Result "1-0"] [WhiteElo "201"] [BlackElo "152"] [TimeControl "72000+600"] [Termination "ChessPlayer097283 won by checkmate"] 1. e4 d5 2. Nf3 dxe4 3. Ng5 Nf6 4. d3 exd3 5. Bxd3 h6 6. Nxf7 Kxf7 7. Bg6+ Kg8 8. Qxd8 e5 9. Qd5+ Be6 10. Qxe6# 1-0

Alternatively you could play the ICBM against the Caro-Kann and ACTUALLY win games against players up to 1700 rapid like so:

Ok

This is what you have posted.

9...Nxd5 looks like a slight improvement for Black- no?

Or you'd rather first learn how the horsie is moving, and only then make openings of your own.