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There's a scene in Konosuba season 2 where the protagonist commisions a grand suit of armor, puts it on, but discovers that the armor is completely useless since he can't so much as properly exit through the door because of its weight compared to his strength, played for comedic purpose. Is there a trope for when someone is given a mighty tool or weapon, whether it be armor or anything else, but it's discovered to be useless for that person in particular?