Hey man, cool deck.
I never quite got round to it, but I always liked the idea of building Noyan.
A few cards that I think could work well in this deck that are super budget friendly are:
Cascading Cataracts and
Darksteel Citadel. If you're turning your lands into creatures, having the indestructible lands seem like very good targets.
Hour of Revelation and
Planar Cleansing. These effects can be devastating late game, but they leave you considerably ahead if many of your lands are also creatures. You can get in some real damage before people have chance to
rebuild. On a similar note,
Planar Outburst seems made for this deck.
Also,
Flux Channeler seems like a great fit here. You'll be casting a load of spells anyway and the proliferate triggers can make your land army huge.
And maybe something like
Make a Stand and/or
Unbreakable Formation as a bit of protection. Like you say, wipes can really hurt you so could be nice to have a little insurance, just in case.
I hope some of these suggestions have been helpful.
Cool deck man, I hope you have a lot of fun with it.