437.1. Preventing damage is the act of reducing the Damage a set of game objects would take.

437.2. When damage is Prevented, it is replaced with an event where it deals that much damage reduced by the Prevent Value tracked on the Unit specifically.

437.3. When damage is dealt this way, reduce the Prevent Value being tracked on the Unit affected by the Prevent action by the prevented amount.

437.5. Damage can still be assigned to Units in combat that are affected by Prevent. The damage dealt as a result of that assignment will be affected by the Prevent action.

437.6. Prevent is a Limited Action.