Combo Deck

You were looking for a combo deck and while there
doesn't seem to be a true (i.e. 1 big turn) combo deck
in the set, this deck can set up a soft lock by turn
3.

The Deck:

4x Mental Acumen
4x Counterspell
4x Bounceback

4x Chronodrake
4x Bedazzling Muse
4x Giant Snapper
4x Ancient Drake
4x Temporal Zephid
4x Wrathful Mist Giant

4x Collapsing Dam
10x Island
7x Plains
3x Mountain

The combo consists of getting Bedazzling Muse into
play with Mental Accumen in order to "Abeyance" your
opponent every turn. As an added benefit, your
opponent gets Wrath-ed as well and cannot play any
creature spells (save instant creatures and then only
on your turn. The combo is three colors, but it
shouldn't be too tough with the fetch lands. The Muse
and Bounceback also have the "impulse" ability to
churn through your deck. The lock is definitely worth
it.

The rest of the deck consists of OMC creatures with
powerful effects. If your opponent chooses not to
counter your creatures (which they probably won't)
then the deck should play out like an aggressieve
Skies deck. If they do counter your guys, well, then
your deck is full of Ancestrals, Time Walks, Time
Twisters and Wraths. Good times for all.

The sideboard should probably have some stuff for
decks with lots of counters (like Psyche Out) and
probably the Red/Green Wash Out. Can't really think
of much else besides that, though.

This deck looks like it would be a blast to play.