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Message: <blockquote data-quote="ECMO3" data-source="post: 8499803" data-attributes="member: 7030563">And at that point of decision, disadvantage is ALWAYS more powerful than SB.  Every single time.By the way, I am certainly not suggesting that something that could apply disadvantage to one roll for a 1st level slot is powerful.  Applying disadvantage in general to one roll would be a very weak use of a spell slot and something more appropriate for a cantrip IMO.  Cause Fear can cost disadvantage to all attacks and abilities for an entire minute, and it is a good but not OP spell.  Bane can give a -1d4 to attacks and saves to 3 enemies for a minute and is generally considered a mediocre spell.The real power in SB comes in its wide array of uses and the fact it can be used as a reaction.You can only replace one dice not both.  Look in the PHB page 173.  That said I don't really understand the numbers here or in your corrected post (perhaps I read them wrong).You replace one of the dice (the highest) with the lower of that dice or SB and then you determine success or failure based on the highest of the dice that was replaced/compared and the other dice that was not replaced.This means with advantage and a DC 11, if you are ready and do apply Silvery Barbs every time they succeed they will have a 50% chance overall of suceeding on the save (which is the same as if disadvantage was applied to make it flat). The possibilities are they fail both initial rolls (Fail 25%), they fail one initial roll and the SB reroll (Fail 25%), The fail one initial roll and succeed on the SB reroll (succeed 25%), they succeed on both initial rolls and the SB reroll happens but does not matter (succeed 25%)Note, SB is only equivalent to applying disadvantage on a roll with advantage at this one DC of 11.  If the DC is lower than 11 changing it to a flat roll will result in a failure more than SB.  For example if DC is 8 applying disadvantage to a roll with advantage will make the enemy fail 35% of the time.  Being ready with silvery Barbs and casting in on a successful save would result in an overall 28% chance of failure.  For reference a straight up failure with advantage is 12%.If the DC is higher than 11 having SB on tap will actually work more often overall than making it a flat roll.Not at the point it takes affect.  SB is a reroll, it is not disadvantage.  It is only the same statistically if you are including the results where you will not actually cast the spell, and that is often.SB has no effect if the enemy fails the save.  It is a waste to have it ready, to be in position and have a slot prepared if that is the case.  This will happen often if the DC is high.  The reroll itself will fail a lot if the DC is low.We are using DC11 which is the absolute best case for SB.  In this ideal case it will change the outcome 25%.  At any other DC it will change the outcome LESS than 1 time in 4.EPHB page 173 discusses replacing a dice with advantage/disadvantage.  You only reroll and replace one of the two dice (highest in this case) and then reapply the advantage/disadvantage mechanic with both.  You do not reroll both dice, nor do you replace both dice with the one SB reroll.  You replace one of the dice.If you are talking about the advantage relationship with SB - If the opponent has advantage and rolls higher than his save with both dice, SB can be cast but it can never change the result to a failure because the dice not replaced is still a success.HAPPY NEW YEAR!</blockquote>

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