Upgrade cards are played from your deck onto characters, via a process called 'attaching'. The 'attached' character then gains the ability of the Upgrade. Some Upgrade cards have associated dice (for example, Lightsaber) while other Upgrade cards do not have any associated dice (for example, Hunker Down). When a character activates the dice associated with any Upgrades attached to the character are rolled alongside the character dice, and resolved as normal. When a character is defeated, its Upgrade cards are discarded (unless they have a special condition, such as the keyword 'Redeploy').
Upgrade cards tend to come in multiple types. The current types of Upgrade cards are:
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