Welcome to the new forum!
Please do all of your dice rolls here.
The way you roll your dice here has changed.
Here's how to do it now:
Normal roll
[xdy] = roll x times the die y
example:
[3D6] = roll the d6 three times
Best of ...
[xdy,z] = roll x times the die y, take only the best z rolls
example:
[4D6,3] = roll the D6 four times, show the best 3 rolls