Manifest Deck

I've been thinking about a Manifest Deck, searched a bit with google, and this is what i came up with:
http://deckbox.org/sets/894703
The cards in the sideboard are maybecards.
The deck is mainly for casual play.
Soul Summons, Cloudform and Lightform are of course for the manifests. Whisperwood Elemental supports this furtheron. If there should be a boardwhipe, you can manifest Whisperwood Elemental, sacrifice it and gain many manifests.
Hooded Hydra, especially with Cloud- or Lightform works very nice. Master of Pearls pushes all manifests and creatures.
Temur Sabertooth is in case I need a manifested card on the hand.
I'm not sure about the topdeckcontrol (Brainstorm, Sensei's Divining Top, Thassa, God of the Sea) - not sure if i need it at all

I would apreciate some feedback!