New Phyrexia deck in development! I hear the pros yammering about splinter twins pick them up while you can! Also it wouldn't hurt to grab pyromancers ascension and bloodchief ascension. They might have a better deck waiting for them with the next sets release. Speaking of which the prerelease is this weekend May 7-8 and it will be on sale the following week May 13th.
If you wanna read a little more on New Phyrexia check out the product information page at wizards here.