First, there is the original run by Steve Ditko and Stan Lee, which established the back ground and tone for Marvel magic. Stan continued after Steve's departure and kept the neat adventures going. Anyone should agree that Doc has one of the best origin stories ever, and the rhyming incantations really bring a flavor to the series that other magical acts lack.
I'll end with a recent drawing of mine, influenced greatly by the Ditko look, and created with all colored pencil. Just to see what I could do: