Illuminor Szeras is the best option if you want to shift the focus of the precon towards a Sacrifice / Aristocrats angle: he functions as a fantastic sacrifice outlet, generating tons of mana while getting those sweet death triggers and putting bodies in the graveyard
Body Launderer is a house, Connive is incredible, and having such a rattlesnake with upside means that people either dont touch you or sigh before just getting it over with
There are three types of cards that you can find in the Base Set, depending on when the cards in question were printed
Now the Champion plays into some nice space
The amazing thing is Battle for Zendikar , at least by the numbers, is not really making a dent in Standard
Rendclaw Trow also has the capacity to hose other persist creatures which makes it an excellent blocker, but thats about it