I didn’t really understand it myself until I read up about all of the mechanics and built a spreadsheet to explain it. I think that Slayer is by far the best way to do that because Slayer leech is completely OP in the lab for traps and the spikey damage of izaro and argus, but the way it works is really complicated.
I’m not a super hardcore player, but I like to try to start running uber labs within about 24 hours of the start of the league. I’ve been maining Slayer for a few months now, mostly as a league starter uber lab runner. Path of Exile Slayer’s Guide to Leeching by Mind-Game
