But he was very good.
Out of the seemingly endless crop of Mandrake impersonators who cropped up in the Golden Age, Mr. Mystic was one of the least successful, but he was possibly the best drawn of the bunch. Bob Powell achieved what might be his personal best on this back feature for the Spirit Section (quite an accomplishment given Powell's portfolio).
Will Eisner created the character and wrote the first run of stories including this memorable tale from 1940.