A surge is an icon found on dice , modifier dials, and cards.
Ability's Surge[]

If a unit’s ability is preceded by one or more surge icons, it must spend one surge for each of that ability’s surge icons to resolve that ability.
Abilities preceded by a surge icon are associated with either a {Melee Attack} or {Ranged Attack} icon. To use such an ability, a unit must spend the appropriate number of surges while performing the corresponding attack action.
- A unit must spend one surge for each surge icon that precedes an ability to resolve it.
- An ability can be resolved multiple times if the unit has the surges to spend.
Surge abilities with a “+” following the surge icon, can have a variable number of surges spent on an individual activation. The ability specifies how the number of surges spent alters the effect.
- These can be resolved multiple times. Each time the ability is resolved, the player chooses the number of surges to spend.
Unique Surge []

A surge ability is unique if it uses the unique surge icon.
A player can spend surges to resolve a unique surge ability only once per attack.
If a unique surge icon is followed by a “+”, the player can spend any number of surges but can still spend surges to resolve the ability only once per attack.
Timing[]
Surge effects are effects that can be resolved during the “Spend Surge” step of an attack.