Anti-creeper rig?only a few hours. I have built a super secret black reactor under my base. It is a tier 5 with a well of suffering an a curse earth with an anti-creeper rig. the altars tier 2 and 3 rings are 28 Rune of the Orb. The rest is sac runes. I am debating replacing the tier 4 row with more Runes of Orbs but they take a lot of time and resources to make. The reactor itself filled my pool (that is my max right now) over night.
I've been thinking of setting one of those things up myself, but couldn't figure out how to make it so that creepers won't blow up with light mages and ruin the whole thing.
(Is it in a LP video?)