Rata Sum

{u}, {t}: Scry 2.
{3}{u}{u}, {t}: Look at the top four cards of your
library. You may exile any number of them.
If you do, create a 2/2 artifact golem creature
token with "{t}: Detain target creature." for
each card exiled this way. Put the rest on
the bottom of your library in any order.
The greatest city of the Asura is a wonder of arcanic architecture.