Testing rolls that reference a previous roll:

The real dice roll: 22

Six more than that roll: 28

Or six less than the original roll: 16

Attack: 15 Damage: 14

Attack: 26 Damage: 21

Attack: 18 Damage: 7

Attack: 12 Damage: 10

Attack: 14 Damage: 12

Ability scores (4d6, drop lowest): 13 11 11 12 18 15

Ability scores (2d8+2): 8 12 13 13 12 18

Attack: 17 Damage: 20

Attack: 25 Damage: 20

Attack: 13 Damage: 11

Attack: 10 Damage: 8

Attack: 24 Damage: 17

Attack: 20 Damage: 11

Attack: 10 Damage: 11

Attack: 15 Damage: 10

vs.

Attack: 26 Damage: 12

Attack: 23 Damage: 15

Attack: 20 Damage: 10

Attack: 23 Damage: 22

Attack: 13 Damage: 16

Attack: 14 Damage: 9

Testing:  2 rounds of combat: 2 Hand axe attack vs. Quarter staff with Shillelagh

Hand axes:

Turn 1: BA: Hunter's Mark, Attack 1: Attack: 10 Damage: 8

Attack 2 (with advantage if 1st attack hit): Attack: 14 Damage: 11

Turn 2:  Attack 1: 15 Damage: 19 

Attack 2: Attack: 24 Damage: 16

BA 2 weapon fighting: Attack: 18 Damage: 11

Turn 3:  Attack 1: 22 Damage: 11 

Attack 2: Attack: 17 Damage: 13

BA 2 weapon fighting: Attack: 19 Damage: 6

Quarterstaff (+1):

Turn 1: Bonus Action HM, Attack 1: Attack: 13 Damage: 10

Attack 2: Attack: 6 Damage: 8

Turn 2: Bonus Action Shillelagh; Attack 1: Attack: 23 Damage: 20

Attack 2: Attack: 20 Damage: 10

Turn 3: 

Attack 1: Attack: 27 Damage: 27

Attack 2: Attack: 24 Damage: 13

Testing radom 4d6 drop lowest 3 groups.

Group 1: 15, 10, 9, 17, 15, 11.

Group 2: 12, 13, 16, 16, 12, 17.

Group 3: 12, 13, 11, 12, 6, 10.

Attack: 7 Damage: Unable to parse dice roll. (slashing) + Unable to parse dice roll. (radiant) + Unable to parse dice roll. (acid) = 0

Test

1st roll: 2 conditional: Unable to parse dice roll. 

100  vs 1-30%

Ability scores: 16 17 14 13 12 15

18 

Testing expanded critical with roll:-1:critical>=19 syntax for conditional in the damage roll: 

Attack: 17, Damage: Unable to parse dice roll.

Quote from Ben_Evolent >>

Testing expanded critical with roll:-1:critical>=19 syntax for conditional in the damage roll: 

Attack: 17, Damage: Unable to parse dice roll.

Huh.  I thought that worked before.  Trying to apply cs>=19 on the attack roll: 

Attack: 25, Damage: 17

Making sure that 1d20cs>=N actually works with the roll:-1:critical check:

Attack: 10, Damage: 14

Testing 1d20cs>=N with multiple different damage types:

Attack: 22, Damage: 30 (magical slashing) + 6 (necrotic from Hex) = 36 (total)

Ability scores: 17 16 16 8 12 15