My DM is using a variant of crits in 5E, where instead of double dice, one of any extra dice is instead automatically maxed. This is easy enough for a regular weapon attack (we just put the maximum value of the weapon's die type in the CRIT field, as shown in the attached picture). The crit just rolls 1d8+8 (plus appropriate attribute mod) and it's fine. But for sneak attack (or a Paladin's smite) it's a whole new problem. On a crit, he wants all of the sneak attack dice to be rolled except for one, which would be an automatic 6. I can't figure out any way to do this besides making two entries for every weapon, one with sneak attack (in the Damage2 field, with a +6 in CRIT similar to above) and one without. Any help?