So, after the new patch, for the sake of SCIENCE, I decided to do a few runs to see just how bad the nerf actually was, as spawning endless spiders would potentially dethrone him from top tier status....
...Nope. Endless spiders are a myth, same as the 2 hearts for 1 pay out myth. (He still pays out consistently at 1.5:1) Dark Bum's nerf is just a slight hit to his efficiency, if even that.
Out of the course of two normal runs in which Dark Bum was successfully acquired, the first in the Chest (Extremely late, and lackluster), and the second on Depths 1, Dark Bum paid out the following amount of times and with the following:
Run #1: 5 Times (Too small of a sample size honestly) Payout: 5 Soul Hearts, 0 Black Hearts, 0, Blue Spiders, 0 Enemy Spiders.
Run #2: 32 Times Payout: 20(Potentially +1) Soul Hearts, 5 Black Hearts, 5(Potentially -1) Blue Spiders, 2 Enemy Spiders. (Unfortunately, in the last payment, I was rammed by a charging Famine at the same time, and can't really tell if Dark Bum spawned a blue spider, or if I simply landed on the spirit heart spawned as he paid out, so for purposes I'll count it as a blue spider.)
That's a positive payout about 78.125% of the time, a "neutral" (Blue spider) payout 15.625% of the time, and a "bad" (If you have Leech or the likes, or are breaking the game, this honestly isn't necessarily a bad thing). That's almost 80% of the time that you get a desirable payout
