In campaign Xaltwind's Test Campaign
4d20+2+4-2-4
41
Breakdown:
DiceRoll[4d20]
→
16
,
4
,
18
,
3
Constant[+2]
→ 2
Constant[+4]
→ 4
Constant[-2]
→ -2
Constant[-4]
→ -4