Boon of Unbridled Power (5e Epic Boon)
From D&D Wiki
Boon of Unbridled Power[edit]
Prerequisite: Strength score 20 or higher, at least 19th level
After fully completing your training, you have finally untapped your full strength. When you take the Attack action, you can cause all your melee weapon attacks using Strength to cause full damage, instead of rolling for it, until the end of your turn. Once you use this boon, you must complete a short or long rest to use it again, unless you suffer 1 level of exhaustion to use it agian.
Back to Main Page → 5e Homebrew → Rewards → Epic Boons