Seal

Sealing is a battle mechanic in Xenoblade Chronicles 2. Upon executing a level 3 Blade Combo, a seal matching the element of the final step is applied to the battle, and remains until the battle ends. While this seal is active, any attempts by an enemy to do what matches the seal will fail, with the message "Failed" accompanying the attempt. Only one seal can be active at a time; applying a new seal will overwrite any existing one.

Because only the most recent seal applies, maintaining one that is the most useful in a given fight (by only using Blade Combos that end in a single element, or avoiding them altogether once the desired seal is up) is antithetical to building elemental orbs for strong s (by using Blade Combos that end in many different elements). As a result, the player must choose between using seals for defence, or using combos for offence.

List of seals
There are many routes to each seal, as only the final element matters.


 * [[Image:XC2 element icon Fire.png|20px|link=]] The Fire seal is Self-Destruct. Any arts that involve self-destructing will fail to damage the party, while still rendering its full effect to the enemy using it.
 * [[Image:XC2 element icon Water.png|20px|link=]] The Water seal is Stench. Any attempt to inflict Stench will fail.
 * [[Image:XC2 element icon Wind.png|20px|link=]] The Wind seal is Blowdown. Any attempt to inflict will fail.  is unaffected.
 * [[Image:XC2 element icon Earth.png|20px|link=]] The Earth seal is Shackle Driver. Any attempt to inflict Shackle Driver will fail.
 * [[Image:XC2 element icon Electric.png|20px|link=]] The Electric seal is Back Attack. Any arts that strike behind the user will not have any effect when used.
 * [[Image:XC2 element icon Ice.png|20px|link=]] The Ice seal is Shackle Blade. Any attempt to inflict Shackle Blade will fail.
 * [[Image:XC2 element icon Light.png|20px|link=]] The Light seal is Affinity Down. Any attempt to inflict Affinity Down will fail.
 * [[Image:XC2 element icon Dark.png|20px|link=]] The Dark seal is Reinforcements. Any attempt to add more foes to the battle will fail. Existing enemies wandering around the field may still choose to join the battle.