Roll groups
Keep, drop, and sort whole expressions in braces.
Braced groups
{expression,expression,...} evaluates each item and sums the values. An item may contain dice, constants, operators, and functions. Modifiers after the closing brace act on whole items; inner modifiers act on individual dice.
{1d8,1d10}
{d6+2,d8+1}
{1d8,1d10}kh1
Selection and order
Groups accept only k, kh, kl, d, dh, dl, s, sa, and sd. {d6+2,d8+1}kh1 keeps the higher-valued expression; all dice from the dropped item remain in the result with included: false. Sorting changes presentation, not the total.
{2d6,1d12,5}dl1
{d6+2,d8+1}kh1
{d4,d6,d8}sd
Explosion, reroll, unique, targets, criticals, and min/max cannot modify a whole group. Apply them to its inner dice. See keep and drop for face selection.