Ed sat on his bed upstairs in the magic house that Dumbledore had left him in thinking back on the process of getting the horcrux. How had he not seen any magic?
Flash back
Ed walked in to the castle he knew that the building was used as a school so no one was there over summer break. Looking around he wondered why anyone would paint empty paintings. Surging he walked to the wall and used alchemy to make a stare case that would lead strait to the hidden room that held the head thing with the blood seal. He collected it and left without seeing anything magical.
Ed had found the cup he knew that it would be moved to a bank so he had to get the seal tonight. (The molfoys kept the cup until the Harry was about 10 before trying to move it to bellitrxes vault.) Going to the window he looked in and saw the cup grinning he made a hole in the window and grabbed a small pile of gold coins and changed them into a replica of the cup hearing voices he quickly swapped the cups. But as Ed started to lower his platform to the ground he saw a black book. It was a diary, which he knew from the feeling of evil surrounding it must be the dairy so he grabbed it to and finished lowering himself to ground level he then turned and ran.
The locket had been the easiest Ed had just paid a thief (munges) to steal it from some criminal's house. The thief had wanted extra but Ed was in such a good mood that he had given it to him in exchange for his silence.
The ring had been hard to find. It had taken Ed months to find any info on the stupid thing, but once found he just grabbed it and ran. Nothing magical, just a slight burn mark where he had put it on his right hand, Winery had almost killed him even though he had no idea how the mark had gotten there.
Present
Really Ed hadn't even known that the snake was a horcrux or not but judging by the odd balls expression he was right.