No native speaker, but isn't surveilling when you spy on someone else, flavorwise? Dimir getting selfmill feels also odd, like theire mechanic is fueling Golgari's and Izzet's ... It is cool per se, but I feel like they never get my guild on point. Transmute still my favorite.
I'm pretty high on Jump-Start, hope it will be better executed than Replicate, which was handled too carefully.
Mentor seems worse and more boring than battalion, but let's see, it's okay I guess.
Not sure what to make of undergrowth. Is it just like Threshold with not certain amount to reach?
Convoke is great and we all know that.