The altar with well of suffering above. The box above contains 5 vanilla zombie spawners, working like a charm. We do not have our base chunk loaded, but if we do that sometime I will put life imbuers from Botania on the spawners.
Below the altar I have an emerald pipe with all 4 color pipe wires and 4 diamond gates on it. Below 1 of the runes I have a Resonating Redcrystal for transmitting a signal from the altar downstairs.
The gate on the side of the resonating crystal has conditions for sending the redstone signal, all 4 gates have similar setups for the different tier slates and corresponding pipe wire colors:
The pipe wires are separated from the golden pipe on to structure pipes a little down the line:
This is so I can use one of the pipe wire lines for another signal further down. These 4 pipe wire signals are used to choose which tier slate should be produced. They lead to 4 different levers using some gates and automagy redcrystal:
The sidewards resonating crystals are connected to the ones below the 4 different color pipe wires with gates. The upwards crystals connect the crystals below 4 levers. The dense crystals are used to make the signal one-way, so any of the levers will transmit a redstone signal to the structure seen on the left. The golden pipe line seen on this image is the output of the slates to a chest besides the 4 levers.
The levers and their resonating crystals:
Only 1 lever should be turned on at a time. If the altar is full of blood and empty of items the chosen slates will be produced. The corner of the ouput chest is in the lower left corner of the screenshot.
A living rock barrel (bspace upgrade to where I have automated living rock production). The resonating crystal receives signal from the one below the altar when the altar is full of blood and empty of items. Behind the emerald pipe is a structure pipe receiving the redstone signal when a lever is turned on, the redstone signal is turned into red pipe wire signal so the gate on the emerald pipe can combine redstone signal with red pipe wire signal and pulse a single time. The diamond pipe is there to sort the output from the altar to the output chest and sort living rock up to the altar.