When I was testing out the wind flinging on npcs, when they got far enough away they would teleport back to their spawn point. They still had momentum though so they would often immediately fly off again in the same direction multiple times.
Wait, Knockback wind mages instakill things now??? last time I played on mine it just blasted them miles away where they could never be found again (so things like pirate ships wouldn’t drop their chests because the pirates were still alive somewhere)
knockback only really works well on lower level npcs and unsuspecting players
rarely kills the players tho, like a 20-30% chance they die
as someone who has died to this, it visually looks like you plummeting to the sea floor, and then dieing on contact