I don't think you want or need that many Shock lands. I'd probably go down to 2 Fountains and 1 Foundry. Put in more of the fetches and more basics instead.
Remand 
is probably better than Negate because you can counter anything. And if you can put it under the Scepter, it's going to counter everything and draw you cards at the same time.
Geist looks very underwhelming in this list. You don't have any equipment to make it a monster or give it evasion (outside of Elspeth). Plus, having it as a 4-of makes it likely that you have one on board and get a second one stranded in your hand.
I think that you don't have a very good chance of putting together the "combo". You have no draw spells and no filtering spells. You're going to run out of answers very soon. I'd probably cut the Geists and an Elsepth and put in some draw/dig spells to find the Scepter and a good spell to put under it.
It also seems like Meddling Mage is a bit of sideboard card to me. Maybe you could use
Spellskite 
s to protect your Scepter instead?
