Advanced Blood Infusion
Soon after my first Blood Infuser was built, I started to think of some optimizations to make the machine faster and more efficient. Using the Crushed Dark Gems I was able to construct materialized Promises which the Blood Infuser actually seems to adhere to, it looks like the machine is actually alive in some way...
Filling a Bowl of Empty Promises with this purple powder and infusing it with Blood will result in a Bowl of Promises of a certain strength. Combining this with a reactant and a mineral promise acceptor which can be created with a significant amount of Blood, will result in a Promise of a certain type. Promises of Tenacity can be created by utilizing organic reactants, this will allow the machine (and maybe others as well) to allow for more Promises and Blood to hold, furthermore, it increases the possible infusion recipes. Promises of Velocity can be used to increase the speed of the machine, while the Productivity Promise will reduce the amount of Blood required to process an item.