Maybe a few SoWs and it's good to go.
Why would he add SoW's on a deck that already deals spell damage and doesn't even have quinted creatures?
Attack boost. SoW costs 3
and adds +4 attack, essentially summoning a 4|x creature (though it's killed together with the psion)
However, that is a bad idea in this deck.
1. It's fractal deck, which means less hand clogging = better.
2. The cost difference is not that significant anyway, paying 1 extra quanta for further CC spreading is preferred.
Therefore, this deck might be better off without SoW.
One suggestion (seconded as it has been posted before) would be -dim +spark, if you want Sparktal splashed. It allows for better chance of drawing Spark.