Boost Acier (Steely Spirit)

Steely Spirit provides a unique team support function by boosting the power of all Steel-type moves used by both the ability holder and any allied Pokémon on the field. This ability multiplies the base power of Steel-type attacks by 1.5x, making it particularly valuable in doubles and multi-battle formats where teammates can benefit from the enhancement. The boost applies to any Steel-type move regardless of whether it's a physical or special attack, affecting everything from Iron Head to Flash Cannon.

The ability's wording evolved slightly between generations, with Gen 8 emphasizing ally support while Gen 9 clarified that the user's own Steel moves also receive the boost. This makes Steely Spirit function similarly to abilities like Flower Gift or Battery, creating a supportive battlefield presence that can turn Steel-type attacks into formidable offensive tools.

Perrserker stands as the sole possessor of this ability, and while it may not be a top-tier competitive threat on its own, Steely Spirit opens interesting strategic possibilities in doubles formats. When paired with other Steel-type attackers or Pokémon that learn Steel moves as coverage, the 50% damage boost can create unexpected power spikes that catch opponents off guard. The ability essentially transforms any Steel move into a significantly more threatening attack, making it a niche but potentially impactful team building consideration.