Boost, or Boosting, is a function that grants temporary levels to a Hero in exchange for 
Soul Dust. Boost is unlocked at League 23 and is available from the Hero Panel.
Cost[]
The base cost of Boosting varies depending on hero Rarity and Level. There is no limit to boosting other than availability of Soul Dust, however each Boost will cost 4x the Soul Dust used for the prior boost for each activation on the same Hero. Boosting lasts for 24 hours except during Global Events , during which they last 48 hours and may cost less Soul Dust (Up to 50% for event featured heroes). Applying another boost to an already boosted hero will refresh the duration of all boosts currently affecting that hero. The Guild Bonus Masterful Enchantment can also be activated to reduce the cost for boosting.
| Rarity | Lvl 1-5 | Lvl 6-10 | Lvl 11-15 | Lvl 16-20 | Lvl 21-26 |
|---|---|---|---|---|---|
 Common
|
6
|
10
|
18
|
37
|
85
|
 Rare
|
10
|
17
|
37
|
78
|
140
|
 Epic
|
30
|
40
|
75
|
115
|
175
|
 Legendary
|
100
|
110
|
138
|
173
|
220
|
Sacrifice[]
Hero Souls can also be Sacrificed for Soul Dust. The amount of Soul Dust gained is based on the hero's Rarity:
| Rarity | Amount | Gained Soul Dust
|
|---|---|---|
| Common | 500 |
10
|
| Rare | 200 |
10
|
| Epic | 50 |
10
|
| Legendary | 10 |
10
|