Along the same theme as above..
Vanilla wither skeleton farm with piston/pressure plates to collect them for infinite coal power.
And unless I'm mistaken about how they work (very possible, I haven't used them) an automous activator can do the killing with a looting sword. Make it a flux infused sword an a system using the very smart itemducts to pull them when out of power and sends them to an infuser and back just because you can.
Vanilla wither skeleton farm with piston/pressure plates to collect them for infinite coal power.
And unless I'm mistaken about how they work (very possible, I haven't used them) an automous activator can do the killing with a looting sword. Make it a flux infused sword an a system using the very smart itemducts to pull them when out of power and sends them to an infuser and back just because you can.