Necromancer · Poison and Bone Skills

Bone Prison

Required level 24SummonClassic

What it does

creates a barrier of fossilized bone around your target.

Duration: 24 seconds

How Bone Prison works, in depthThe Necromancer's ring of bone around a target: the bonewall unit's base life plus 25% a level past the first (475% at level 20) and 8% per hard point in Bone Armor and Bone Wall, standing 24 seconds, for 27 mana at level 1 falling to 8 at level 20. What it blocks, what breaks it, and what it feeds.

Items that give Bone Prison

2 items

Chargescast from the item until the charges run out

MarrowwalkUnique · Boneweave Boots	Level 33 Bone Prison (13/13 Charges)	66

Chance to castfires on its own when you hit, are hit, kill …

Arm of King LeoricUnique · Tomb Wand	10% Chance to cast level 2 Bone Prison when struck	36

Per level

before synergies, masteries and +skills from items

Level	Mana cost
1	27
2	26
3	25
4	24
5	23
6	22
7	21
8	20
9	19
10	18
11	17
12	16
13	15
14	14
15	13
16	12
17	11
18	10
19	9
20	8
21	7
22	6
23	5
24	4
25	3
26	2
27	1
28	1
29	1
30	1

Also raised by

items that add levels without naming it

Synergies

per hard point in

Bone Armor: +8% Life per Level
Bone Wall: +8% Life per Level

Requires

Boosts

Source: skills.txt row “Bone Prison” and skilldesc.txt of build 3.3.93847. Mana = (mana + lvlmana × (level − 1)) × 2^manashift ÷ 256; damage brackets at levels 2–8, 9–16, 17–22, 23–28, 29+ scaled by HitShift. · Report incorrect data

Unless stated otherwise, everything here is Diablo II: Resurrected build 3.3.93847, Reign of the Warlock.

Level	Mana cost
1	27
2	26
3	25
4	24
5	23
6	22
7	21
8	20
9	19
10	18
11	17
12	16
13	15
14	14
15	13
16	12
17	11
18	10
19	9
20	8
21	7
22	6
23	5
24	4
25	3
26	2
27	1
28	1
29	1
30	1

Level	Mana cost
1	27
2	26
3	25
4	24
5	23
6	22
7	21
8	20
9	19
10	18
11	17
12	16
13	15
14	14
15	13
16	12
17	11
18	10
19	9
20	8
21	7
22	6
23	5
24	4
25	3
26	2
27	1
28	1
29	1
30	1

Level	Mana cost
1	27
2	26
3	25
4	24
5	23
6	22
7	21
8	20
9	19
10	18
11	17
12	16
13	15
14	14
15	13
16	12
17	11
18	10
19	9
20	8
21	7
22	6
23	5
24	4
25	3
26	2
27	1
28	1
29	1
30	1

Level	Mana cost
1	27
2	26
3	25
4	24
5	23
6	22
7	21
8	20
9	19
10	18
11	17
12	16
13	15
14	14
15	13
16	12
17	11
18	10
19	9
20	8
21	7
22	6
23	5
24	4
25	3
26	2
27	1
28	1
29	1
30	1

Level	Mana cost
1	27
2	26
3	25
4	24
5	23
6	22
7	21
8	20
9	19
10	18
11	17
12	16
13	15
14	14
15	13
16	12
17	11
18	10
19	9
20	8
21	7
22	6
23	5
24	4
25	3
26	2
27	1
28	1
29	1
30	1

Level	Mana cost
1	27
2	26
3	25
4	24
5	23
6	22
7	21
8	20
9	19
10	18
11	17
12	16
13	15
14	14
15	13
16	12
17	11
18	10
19	9
20	8
21	7
22	6
23	5
24	4
25	3
26	2
27	1
28	1
29	1
30	1