New version: Not being able to find scattershot was the most common cause of failing to combo, so I decided to try going back up to the full 50 power. Despite being the most useful body, auralian Merchant was the only Merchant that only had one card to fetch, so it was the cut.
So far I’ve been liking this version better.
A minor update to my earlier deck here
4 Temple Tactics proved to be a bit too many, as it takes a lot of power to combo off holding one as protection and missing the undepleted power on a key turn was too costly. I've still got two for now, as you're absolutely unable to combo off through someone holding up two pieces of removal otherwise and they can be quite valuable against opponents applying less pressure.
The other main change is to the powerbase, experimenting with banners and diplo seal to be a bit faster while not losing that many influence sources. The seals are often very awkward when you want to curve dual->dual->undepleted land though, so they might come back out soon.