D&D 5E - A HALF-ORC Barbarian can combine BRUTAL CRITICAL and Savage Attacks on critical?

Sure. Both effects do the same thing, but they add together rather than multiply so it isn't even a particularly interesting thing.

Now, if you wanted to get nasty-- see if you can find an ability that can allow you to get criticals twice as often (on 19 and 20). Mix that with these abilities and you've really got something nasty.

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