Card College 5 by Roberto Giobbi Page 1163 et seq.
Personal Comment: Really good. There are tons of routines like this. But this is put together well. The setup is little and the effect good. I like the rhythm of the changes. "1, 1, and 2". Instead of the usual "1, 1, 1, slow 1", Or the "boom all 4". This should work as a prime example of how to put together a prelude to a longer routine. And what you need to do, to make this your own.