Apr 24, 2021 12:08 am
A simpler explanation is when you roll a 20 on an attack, you roll all your damage dice twice instead of once. Normally you'd have rolled 1d4 for the dagger and 1d6 for sneak attack (plus 2 for dex). Because you rolled a Crit, you get to roll 2d4 for dagger and 2d6 for sneak attack. The dex modifier is not doubled, just the amount of dice you roll.