Rage Mastery (5e Feat)
From D&D Wiki
Prerequisites: Rage feature
You have trained to gain increased control over your rages. You gain the following benefits:
- The number of times you can enter into a rage is now equal to 1 + the number of times shown for your barbarian level in the Rages column of the Barbarian table.
- Your rage no longer ends if your turn ends, and you haven't attacked a hostile creature since your last turn or taken damage since then.