A short bit of context:
My PCs were on a small island surrounded by lava, examining a magic circle. For each botched roll, the island sank a few feet, and the lava encroached... muwahahahahahaha. As you might imagine, the pucker factor rose in relation to the island sinking, and the Party Leader started yelling for people to help the sorcerer figure it out. So, I had the priest of Shaundakul [knowledgeable about portals], and the priest with a Sage background [convincing story of appropriate book learning] granting Advantage to the primary PC making the Arcana check.
Now, the problem I have is that Advantage doesn't stack. Even though in my mind, both secondary PCs can lend assistance to the primary, there is no mechanical benefit for such. So the question I have for this august group is this: would it be overpowering from a math sense to let the primary checker roll two extra d20s (one for each assistant), and pick the best of the three?
My PCs were on a small island surrounded by lava, examining a magic circle. For each botched roll, the island sank a few feet, and the lava encroached... muwahahahahahaha. As you might imagine, the pucker factor rose in relation to the island sinking, and the Party Leader started yelling for people to help the sorcerer figure it out. So, I had the priest of Shaundakul [knowledgeable about portals], and the priest with a Sage background [convincing story of appropriate book learning] granting Advantage to the primary PC making the Arcana check.
Now, the problem I have is that Advantage doesn't stack. Even though in my mind, both secondary PCs can lend assistance to the primary, there is no mechanical benefit for such. So the question I have for this august group is this: would it be overpowering from a math sense to let the primary checker roll two extra d20s (one for each assistant), and pick the best of the three?