Vision

Visions are a major gameplay mechanic and story point in Xenoblade Chronicles. As he wields the Monado, Shulk occasionally gets glimpses of what will happen in the future, which he can use to his advantage. Visions do not occur in Future Connected.

As a battle mechanic
After a certain point in the story, the player unlocks the ability to see visions in battle. Visions occur if an enemy is about to use an art that would leave its aggro target with 15% HP or less. If this is the case, the player will see a vision of the attack landing, before being returned to the battle proper with information displayed on what the forseen attack will do. This information is presented in the form of five "tags".
 * 1) The enemy tag shows which enemy is using the art. For most foes it is a generic image; certain enemy types and many bosses have a unique one.
 * 2) The art tag shows the name of the art, coloured to indicate what it is: a physical art (red text), an ether art (blue/purple text), or a talent art (white text and a level number). Talent arts can also be physical or ether, but this is not distinguished. If the art has an area of effect, an appropriate icon will be displayed: a line, a cone, or a circle (there is no differentiation between "circle around user" and "circle around target").
 * 3) The target tag shows the party member who is the focus of the enemy's aggro, and thus the main target of the art.
 * 4) The damage/status tag shows how much damage the art will do, as well as one of the statuses it will inflict (if any). If the damage is lethal, a skull is displayed.
 * 5) The timer tag shows how much time is left (both in rounded-up seconds and as a bar) before the forseen attack is used. The timer starts at 8 seconds, or 12 if the art is a talent art.

When a vision is active, the player's actions can change what will happen. Changing a vision will break the relevant tag, replacing it with an updated one that reflects the new future, and change the music to Visions of the Future for the rest of the battle (except for the final boss or any battle for which A Tragic Decision plays). Ideally, the player changes the future to one that is better than the one that triggered the vision. While some of the tutorials imply that there is only one right way to deal with each type of vision, this is not necessarily the case. Breaking a tag generally also breaks all other tags below it, as they depend on it. The following actions may break tags and change the future:
 * The timer tag breaks if the foe is d. The timer will pause until the topple ends. This can grant more time to set up a better defence against the vision, but it may also cause an established defence to expire before the new countdown completes.
 * The damage/status tag breaks if the amount of damage or the status inflicted change. Debuffing the foe's offenses, buffing the target's defences, defending against debuffs, or helping the target out of being toppled or dazed may all have an effect. The damage tag also breaks if the attack's lethality changes, for example if the target is healed enough that they will now survive the hit.
 * The target tag breaks if the enemy's aggro target changes. It is possible for two party members to trade aggro back and forth, causing the target tag to break many times. It is advisable to try and avoid changing aggro if the current target is well-suited to take the incoming attack.
 * The art tag breaks if the enemy is d, put to, confused, or placed under Arts Seal. In addition, the rest of the vision is blanked until the status ends. Once the status does end, a new vision will occur in which the enemy uses a different art, even if the results would normally be too weak to trigger a vision. This also means the enemy may use an art that it would not normally use in this situation.
 * The enemy tag breaks if the foe is killed, and the vision never takes place.

Breaking tags also raises the of all party members. It is possible to manipulate some effects to break many tags in quick succession for a large tension boost. However, breaking most tags will only raise tension within the current level, and cannot move it to the next level.
 * Timer tag: +20
 * Damage/status tag: +25
 * Target tag: +50
 * Art tag: +100
 * Enemy tag: Set to very high tension

If there is one block of available, the player may spend it to "warn" either (or both) of the other two party members. Warning a party member grants them full talent gauge and allows the player to select an art for them to use, regardless of cooldown. They will then use the selected art against the enemy causing the vision. Each party member can only be warned once per vision.

While an enemy is the subject of a vision, they remain in their "windup" state and cannot move or auto-attack. During this time, it will take +50% damage from ether attacks if it is using a physical art, and +50% damage from physical attacks if it is using an ether art. The lack of auto-attacks means the party can act a bit more freely without worrying about background damage.

Other notes about visions include:
 * Shulk does not have to be in the party for any of the vision system to operate.
 * Auto-attacks cannot trigger visions.
 * Visions only trigger based on the HP of the aggro target. Anyone else who happens to be in the area of effect may get damaged without warning.
 * Visions only trigger based on how much HP the target will be left with after the raw damage. Any damage done via debuffs is not counted.
 * Only one vision can be active at a time. If another enemy does something that would trigger another vision, no warning is given.
 * Certain arts are set to always trigger a vision, even if they would deal low damage (or even miss entirely).
 * Warning a party member will cancel their current action, interrupting and wasting it.
 * Warning will empty her talent gauge rather than filling it.
 * If the target of a vision is out of the art's range when the timer expires, the attack will miss.
 * If the target of a vision has an gem equipped, it is possible to get a vision where they take damage equal to or greater than their remaining health, but is not marked as lethal. This reveals that the Unbeatable gem will trigger on the attack.
 * Enemies with a Soul Read aura active can change their visions after the timer runs out, messing up the player's attempt to change the future to their liking.

Definitive Edition
In the original version, warning a party member will instantly cancel their current action, and they will use the warning art the moment it is selected. In the Definitive Edition, a warned party member instead keeps doing what they were doing while the player is selecting their art, allowing it to complete their action before they use the warned art. This means that in the Definitive Edition, the player should wait for the current art to finish before choosing the warning art, or the warning art might not begin until it is too late.

While this new behaviour is good on the whole, as it leads to fewer cooldowns wasted, it does have some minor character-specific problems:
 * Shulk has to complete the animation of activating the Monado before he can use the Monado Art selected. If the player selects his art quickly, this can lead to it taking even longer than other characters to actually act.
 * If Melia is in the midst of firing an elemental, it triggers the typical chance of ending her burst aura. She retains full talent gauge while the warning menu is active, but cannot use burst arts, and loses all talent gauge afterward. This can be trouble if the player was using the warning to activate her burst aura, as it will be lost entirely instead.

In Xenoblade Chronicles 2
Visions appear in Xenoblade Chronicles 2 as one of 's Battle Skills when he is equipped as a on an active party member.

In Future Redeemed
Visions appear in Future Redeemed as 's Talent Art.

As an inventory convenience
When the player obtains certain items for the first time, they may receive a vision. In this vision, a party member stands alongside either a collectable orb or a chest and states that they just found the last of the item necessary for some future purpose. The item is then marked in the player's inventory with a white "!", indicating that this item will be useful in a future quest, and thus it should probably be kept rather than sold, traded, or gifted. However, these visions may still occur if the quest cannot be obtained in the future, for example because a mutually-exclusive quest was completed instead.

The ability to see quest visions is unlocked upon reaching Bionis' Leg. If an item is collected before then, the opportunity to see the vision for that item is lost, and it will not be marked in inventory. The opportunity is also lost if the vision would feature a character that has not yet joined the party.

Funnily enough, these visions do not necessarily take place in a location where the item in question can actually be found.

As a plot element
Visions are an extension of the Monado's ability to rewrite the future and change destiny, a power granted to Shulk as its wielder.

Shulk has his first vision in the Weapon Development Lab, shortly after taking the Monado from Reyn. While holding it, he accidentally bumps the Monado's handle, causing him to activate the Monado and receive a vision of several things to come - his meeting with Zanza at Prison Island, Sharla vowing to destroy the Mechon, Egil saying his blade did not cut deep enough, Otharon piloting a Mobile Artillery, glimpses of Melia and Sorean, and finally, a vision of Metal Face with his claws covered in blood as Shulk screams in horror.

His next visions are received during the Mechon's attack on Colony 9. Once Shulk begins wielding the Monado again, he receives multiple visions of himself being killed by the Mechon, allowing him to dodge their attacks. Shulk explains that he's seeing the future, with Dunban responding that he never experienced anything like that while wielding it. He receives his next vision as Fiora charges Metal Face in the Mobile Artillery, seeing her be killed. Shulk begs Fiora to stop before he kills her, but she doesn't listen and is impaled on his claws, just as he'd seen back at the lab.

The next vision comes during his and Reyn's trip through Tephra Cave. While resting, Shulk sees a vision of Reyn being impaled by the Arachno Queen. When they encounter the Queen later, Shulk realizes that his vision is about to come true, and on a wave of pure instinct, activates, saving Reyn. This causes him to realize that the visions are only showing him what will happen if he doesn't act, and he can use his visions to change the future. At this point, visions are unlocked as a gameplay mechanic.

After arriving at Bionis Knee and meeting Sharla and the Colony 6 refugees, Shulk sees a vision of Juju being captured by a Mechon with a face, and the party heads off to rescue him. Once Xord is defeated and Juju is saved, Metal Face reappears. Shulk manages to slice into Metal Face's arm, which triggers another vision, this one showing him meeting Zanza at Prison Island, where he ultimately defeats Metal Face. This convinces the party to head for Bionis's Head.

In Makna Forest, Shulk meets Alvis, the imperial seer of Alcamoth, who seems to know of Shulk and his abilities. The two are attacked by Telethia, but Shulk can't use his visions against them. Alvis explains that, due to their connection to the ether, the Telethia can read his mind and predict him, and teaches him how to use to defeat them.

At Sword Valley, during the final battle with Metal Face, Shulk sees a vision of a tower collapsing and impaling the Mechon; he attempts to warn Metal Face of his fate, but he refuses to listen and is killed.

Even after Shulk loses the Monado to Zanza, he continues to have visions due to the residual power of the Monado remaining within him.

After Zanza's death, Shulk loses the ability to have visions, and thus none occur during his trip to the Bionis' Shoulder in Future Connected.