This datapack lets you throw knives like Dio!
The knives spawn in the air and only begin moving once you right-click a target for them to all collectively hit.

(Gameplay video)
twitter.com/i/status/1485438253033734145

The behaviour's based off Dio from the JoJo fighting game Heritage for the Future.

I couldn't have done this without the Timber Forge's tutorials on datapack making, his videos on summonable fireballs and raycasts helped immensely with making this work!

To obtain the ability to throw the knives, type the following command in the chat:
/function knives:give