Adrenaline Enchantment

The enchantment is defined as a normal armor enchantment on the vanilla enchantable armor tag, so it takes the same enchanting path as other armor enchantments. It supports levels up to V. The bonus applies only when the attacker is below 20% of maximum health, and it totals the Adrenaline levels across all equipped armor pieces.

Each Adrenaline level adds 1% to outgoing damage, so a single level V piece gives 5% and four level V pieces reach up to 20%. The mod checks the attacker's equipped armor whenever a living entity deals damage. Its name and description are included in the enchantment data, and the description is read from the language key enchantment.adrenalineenchantment.adrenaline.desc.

Adrenaline Enchantment is client and server, so the server and every player need it. Files are published for NeoForge only, for game version 1.21.1, under All rights reserved, and the code is not open source. Its dependency list is empty, so no other mod is required.