| Hamitup |
I have seen the need for more thralls at early levels brought up a few times. the solution that tends to be brought up is more thralls early with create thrall or action compression so you can summon them while accomplishing other actions, but I haven't seen much about keeping the thralls you have alive.
I like the idea of setting up on one turn and then reaping the rewards of that planning on later turns. I think I would prefer if the thralls were a little easier to keep on the field. Either some grave spells only needing to originate from a thrall but not consume it, or making other options beside bone shaper have a chance at a thrall surviving.
Something like the unstable trait for the inventor could be nice. the grave spells could slightly weaker unless you also consume the thrall with the spell.