Lua error in Module:Skill at line 565: The cost type "Spirit" is invalid. Acceptable values are "Mana", "Life", "ES", "Rage", "ManaPercent", "LifePercent", "UnreservedManaPercent", "ManaPerMinute", "LifePerMinute", "ManaPercentPerMinute", "LifePercentPerMinute", "ESPerMinute", "ESPercentPerMinute" and "ESPercent".Bone Offering is an offeringbuff that increase defenses of allied minions.
By using it you can sacrifice one of your skeleton to create shield that can absorb all damage from the next hit each minion takes, then explodes.
It can be useful for mechanics that can one-shot your minions.
Gem level progression
Level
Mana Cost
1
0
0
25
2
3
9
28
3
6
14
32
4
10
21
35
5
14
28
39
6
18
35
43
7
22
41
47
8
26
48
51
9
31
57
55
10
36
65
59
11
41
74
64
12
46
82
68
13
52
92
73
14
58
103
78
15
64
113
83
16
66
116
88
17
72
126
93
18
78
137
99
19
84
147
104
20
90
157
110
Recommended support gems
The following support gems are recommendations by GGG as listed in-game, and do not necessarily reflect optimal combinations or the views of the wiki.
Gem tier
Support gems
I
II
III
IV
V
Item acquisition
Bone Offering has restrictions on where or how it can drop.
