Firex

Like the one here
https://youtu.be/cNKzHY14PE4?si=Z-7sks5sh1bP90aI&t=17s

gamingislove

Yes, that's possible - since you handle whatever should happen when an ability/item is used via schematics, you'd simply have to do that in the schematic.
E.g. moving the game object of the target into the air or adding force to the rigidbody.

Based on the video, using damage dealers/zones for damage calculation seems a good fit, i.e. only damaging when something actually hits.

Alternatively, you can check if something is on the ground using a Check On Ground node (uses character controller or raycasting) or other check nodes (e.g. Y-axis position checks, raycast nodes, etc.).