It doesnt get the power/toughness of the cloned creature, but thats likely the least important part anyway, especially if youre just making it a second copy of Vedalken Shackles
Some examples of where this card shines include Haakon, Stromgald Scourge, Aryel, Knight of Windgrace, Sidar Jabari of Zhalfir, Syr Gwyn, Hero of Ashvale, and many others in commander
I can only recommend everyone to build a land matters deck at least once
Given what little I know about the Necrons, this seems perfectly in line with how they do things
We did get a Quintorius last year, but thats more of a Quintorius Gaiden, since this Quintorius actually wants to attack with his army of Spirits instead of merely sacrificing them for value
Happy brewing and, as always, happy gaming!