MTG Salvation

To try to get into casual magic (I usually play spikish EDH decks), I was thinking about building a deck around Torpor Orb and Hushwing Gryff. Not as much to shut my opponent down, but more to be able to play creatures whose main drawbacks are their comes into play abilities (Eater of Days, Phyrexian Dreadnought, possibly combining it with Wormfang Manta and Conjurer's Closet).

What colors (aside from white which I need for the Hushwing Gryff) should I play and what other creatures would synergize well with this build?

Blue would generally be useful as it gives you access to Stifle and Trickbind black gives you Hunted Horror which is a popular choice.

There is also Volrath's Shapeshifter, combos very well with the negative 'enter the battlefield' triggers.