The mod let player make smash attack while surfing.
Modrinth: https://modrinth.com/mod/elytramace
How to use:
- Wearing elytra and holding Mace in mainhand
- player in flying with enough fall distances (> 1.5 blocks)
- manually attack an entity
Result -> The mod manages the attack to become a valid smash attack
Demo video: https://youtu.be/D_2W1BXkHQs