The drill of the dead claims to take 75 LP per kill but instead it does 75 LP per tick the ritual is active. Also I would like to ask if the drill of the dead ritual works with sacrificial stones.

It does. And I'm not sure about the LP per tick, but it shouldn't be so. And I'm sorry, we're in December and you posted this in July <.>

Tomben, take a look at performEffect in Drill of the dead. Particularly line 83: SoulNetworkHandler.syphonFromNetwork(owner, getCostPerRefresh()).

You do not multiple by the number of entities. So you don't take 75L per entity. And when there are 0 entities, you still take 75LP.

https://github.com/Tombenpotter/Sanguimancy/blob/TestProbablyBroken/src/main/java/tombenpotter/sanguimancy/rituals/RitualEffectDrillOfTheDead.java#L83