Sacred Arrow

Sacred Arrow (, Sacred Arrow) is 's Final Smash in Super Smash Bros. Ultimate.

Overview
Mythra summons Rex, who says "Mythra, now!" and performs an underhand slash to transition into a cutscene. In the cutscene, Mythra says "Concentrate, Rex.", and she and Rex hold the Aegis Sword together and point it into the sky to summon a beam of light, shouting the move's name. Transitioning into normal gameplay, they point the Aegis Sword forward to rain smaller beams of light from the sky down onto the opponents, whilst Rex says "And, strike!", before they fire a light beam from the sword to finish the move. Compared to Pyra's Burning Sword, Mythra's Sacred Arrow deals much higher total damage and has more horizontal coverage, but has lower KO potential.

If the initial slash fails to hit anyone, the rest of the Final Smash does not occur.

Origin
In Xenoblade Chronicles 2, Sacred Arrow is Mythra's Level 4 Blade Special. The move's animation in Smash is a recreation of its animation in battles in Xenoblade Chronicles 2. While in the original game, Sacred Arrow could not be used indoors, the move has no such limitation in Ultimate for balance purposes.

Trivia

 * Burning Sword, Sacred Arrow, and Final Blaster are the only Final Smashes that start off with a cinematic but end in-game. The opposite holds true for Infernal Climax.
 * Along with, these are also the only Final Smashes from DLC characters in Ultimate to contain non-cinematic elements.
 * Masahiro Sakurai showed an early version of Sacred Arrow in a YouTube video, notably with Mythra holding the much lower. The angle was raised to not look like she is impaling opponents.