Shadow Mist has seen play in multiple HERO decks throughout the years and even has seen some play in non-HERO decks just for the ability to bring out Masked HERO Dark Law
As always in Magic , old cards give way to the new, and combo decks become very slightly stronger
However, this will require you to run a much slower Trainer lock deck like VileGar, so if your going to do that there is really no point in running a Mew Prime-based deck with Spiritomb and Vileplume
Wrath of God AND Day of Judgment At four mana, the classic Wrath of God is the cheapest mass sweep spell that hits everything
Bookmark the link though, as it may come back in the future
Haste is better than a lot of people think in multiplayer, and the Volcanic guy does have some merit