Invincible (XC3)

Invincible is a buff in Xenoblade Chronicles 3. Affected characters take no and are immune to being inflicted with s and s.

At base, Invincible lasts 10 seconds; this can be increased to 20 seconds with buff-duration-increasing effects. Effects that increase buff strength, such as Swelling Blessing, do not affect this buff.

For obvious reasons, Invincible is incredibly powerful. Its drawbacks are that it is difficult to find and has a short duration. The latter can be mitigated heavily with Pause Buff Timer and Unceasing Blessing; the former with Resonant Flag.

It is in fact possible to make the entire party permanently invincible using a combination of the above. One means of doing so is as follows: Once the initial execution phase is complete and assuming the buff timer can be kept paused, this method results in flawless defense, and therefore can be used to take on almost any enemy at no risk. The only exception is that it is still vulnerable to enemy Arts which clear buffs (e.g. Levialord Emperio's Daedalus Web). It is not necessarily optimal damage-wise, but can nevertheless be an easy means of winning the toughest fights.
 * Use Unlimited Sword to make invincible.
 * Use Glittering Melody (with another character) before the invincibility expires, to pause the buff timer.
 * Interlink Noah with and immediately cancel the interlink to pass the invincibility buff to her.
 * Use Resonant Flag on Mio to pass the buff to the rest of the party.
 * Continue to use Glittering Melody to keep the buff timer paused.

By party members

 * Unlimited Sword