So apparently... if you hit something with the Deku Spear's slingshot (C3) and then dodge when the seed touches an enemy... they go flying in the direction you dodged in. You can even fling them to the side or towards yourself!
This has been around since the Wii U version. I think this is the first time I made a video dedicated to this oddity though.
At present, Graph has 201,766 views spread across 181 videos for Hyrule Warriors, accounting for over 1 day of watchable video on his channel. This makes up 31.54% of Hyrule Warriors content that Graph has uploaded to YouTube.