User blog comment:Gcheung28/DC Heroes vs. Villains Bracket Tournament - Round 4/@comment-24.77.230.139-20141010211325

Doctor Fate's Weaknesses:

Power Limitation:Separation from the Helmet of Fate removes much of his powers and abilities Loud Noises: Loud noises affect Kent's ability to 'hear' what Nabu tells him, and thus makes it difficult for him to concentrate enough to cast a spell.