Worked out by the game's own trait code: the boon's first copy at each rarity, then each Pom of Power level, which adds the same amount whatever the rarity and less each time.
Max Duration
Common
Rare
Epic
Heroic
Level 1
5
5
5
5
Level 2
10
10
10
10
Level 3
15
15
15
15
Level 5
25
25
25
25
Level 10
50
50
50
50
Each Pom adds 5, 5, 5, 5, 5, 5, 5, 5, 5 (levels 2 to 10).
Common
Rare
Epic
Heroic
Max Duration at each level and rarity.Show the numbers
Level
Common
Rare
Epic
Heroic
1
5
5
5
5
2
10
10
10
10
3
15
15
15
15
4
20
20
20
20
5
25
25
25
25
6
30
30
30
30
7
35
35
35
35
8
40
40
40
40
9
45
45
45
45
10
50
50
50
50
Wrath Stocks
Common
Rare
Epic
Heroic
Level 1
4
4
4
4
Level 2
8
8
8
8
Level 3
12
12
12
12
Level 5
20
20
20
20
Level 10
40
40
40
40
Each Pom adds 4, 4, 4, 4, 4, 4, 4, 4, 4 (levels 2 to 10).
Common
Rare
Epic
Heroic
Wrath Stocks at each level and rarity.Show the numbers
Level
Common
Rare
Epic
Heroic
1
4
4
4
4
2
8
8
8
8
3
12
12
12
12
4
16
16
16
16
5
20
20
20
20
6
24
24
24
24
7
28
28
28
28
8
32
32
32
32
9
36
36
36
36
10
40
40
40
40
Damage
Common
Rare
Epic
Heroic
Level 1
30
38
45
53
Level 2
36
44
51
59
Level 3
40
48
55
63
Level 5
45
53
60
68
Level 10
55
63
70
78
Each Pom adds 6, 4, 3, 2, 2, 2, 2, 2, 2 (levels 2 to 10).