ElytraMace

The mod automatically handled the process when player try to make a smash attack while wearing elytra.

How to use:

1. Wearing elytra and holding Mace in mainhand
2. player in flying with enough fall distances (> 1.5 blocks)
3. manually attack an entity

Result -> The mod manages the attack to become a valid smash attack

Demo video: https://youtu.be/D_2W1BXkHQs