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Continue to ChatFlanking to gain advantage is an optional rule in 5e https://www.sageadvice.eu/flanking-to-gain-advantage-is-an-optional-rule-in-5e/
Flanking to gain advantage is an optional rule in 5e https://www.sageadvice.eu/flanking-to-gain-advantage-is-an-optional-rule-in-5e/