Ian's strength had already been high enough to rival the peak of the Second Energy Level even before he was augmented by the Dead Lord's Power; consequently, he swiftly attained the Third Energy Level shortly after acquiring the Dead Lord's Power.
With his exceptional talent, he soon formed an embryonic Heart Light Body after reaching the Third Energy Level, and with its power, he crushed Viscount Awak, who also summoned a Heart Light Body at that time.
Moreover, his combat skills were extremely formidable, enough to compare with the Great Knights of various Knight Orders.
He was a genius Sublimator who grew comprehensively with virtually no flaws—he was even a researcher in related fields, proving that Ian likely excelled in academic pursuits as well.