Thank you! I will try to take the deck to a FNM to test and improve it!
About bontu: She surelly fits in the deck strategy, but the last time i tried her on a sacrifice deck (WB servos aristocrats) I found her to be a little underwhelming. Sure, the body is quietly good to attack, but the activated ability cost to expensive (B in the cost is restritive) and don't do much. If you want to try her, I would sugest to swap the Soothsayer with her, 2 looks like a good number and it would reduce the curve a little. Maybe her body compensates the loss of the draw.