Behemoth Blade (Japanese: きょじゅうざん Behemoth Slash) is a damage-dealing Steel-type move introduced in Generation VIII. It is the signature move of Zacian.
Behemoth Blade deals damage. If the target is Dynamaxed or Gigantamaxed, its base power is doubled to 200. The bonus does not apply to Eternamax Eternatus, despite its similarities to a Gigantamaxed Pokémon.
If Zacian knows Iron Head while entering battle in its Crowned Sword form, Iron Head will become Behemoth Blade for the duration of the battle.