There was a similar deck that got some top8s here in france, using eternal witness.
See here : http://solomoxen.com/forum/index.php?topic=10889.0
It is true that with rune scarred demon, you can usually kill on the turn you're activating oath, either getting time walk from your grave, or tutoring for it (playing mystical or vampiric at upkeep, or demonic on main phase). Then, you can chain them each turn, while hitting for 6, 12 and 18... Or winning by any other mean.
Well, i totally agree on the concept, using RSD is a good idea.
Nevertheless, I wonder how do you deal with a MUD player with, let's say 2 spheres-like on table ? It is still playable if (an only if) you're able to get time walk in the grave (replaying it for 4), but if you have to tutor for it, it would cost you quite a bit of mana. Instead, a dragon's breath-boosted emrakul could finish the job.
Just wondering how you intend to deal with this specific match-up.
Thanks.
