Hulking Rage (5e Feat)
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Prerequisites: Mechanoid Brawler
On your turn, You can use a bonus action to enter a Hulking rage, that lasts until you dismiss it. It ends early if you are knocked unconscious or if your turn ends and you haven't attacked a hostile creature since your last turn or taken damage since then. You can also dismiss the Hulking rage at any time you choose (no action required).