Sneak Resolve (5e Class Feature)
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Replaces Rogue's Sneak Attack.
You have a pool of d6 dice, equal to the number presented in Sneak Attack column of the Rogue class table. You can spend 1 die while making ability check, saving throw or an attack roll and add the result to the total, if you have advantage on that roll or if an ally of yours is within 5 feet of you.
The Resolve Pool replenishes after you finish a short or a long rest.