Shield Upgrades
Shield upgrades provide units with Shields to deflect incoming attacks. Whenever a unit would take damage, if it has an active Shield, prevent one damage for each active Shield and then flip the corresponding Shield Upgrades face down. Face down Shields are deactivated and will not prevent damage. At the start of a unit’s next activation, flip any Shield Upgrades face up to reactivate them.
Shields are applied to prevent damage after all other effects are resolved. Abilities that reduce the amount of damage dealt to a unit will reduce damage before it affects Shields.