Consistent setup to have full soul for the devout in beast den. After the two dashes to land you on middle plat, do a dash followed by a neutral dash to not go too far left & not activate the camera movement. Then you face right, do float inputs, turn left, jump downdash turn right, side slash twice (keep track of your soul, might need a third time if unlucky of weaver rng), then dash left and proceeed as normal.
This loses .7s optimally, but gives you enough soul to 3fb the devout in beast den, needing only two nail hits to kill it. This saves ~2s (no need for damagetanks or nail hits after the tank), so a net save of 1.3s. This also gives you two soul, allowing for next strat...
RTA viable setup for wrong warp past the first deepnest room during the herrah dupe, after regaining control after hitting the loadzone nail twice -> max jump, after room loads nail swing once after hitting the ground then jump back through loadzone, wrong warp should occur, immediately re-enter bottom load to prevent getting sent back to queens gardens and proceed with rest of herrah dupe as normal
~5s timesave over no WW but since the other strat is horrible to optimize closer to ~8s in reality
Small but consistent 5s timesave for the dupe to herrah. Credits Krythom. after getting early control from the spikes, immediately hit the load, mash nail and as soon as you hear the nail hit do a full jump. Video shows it twice, once with visibility, once with normal vision. Save state is positionned just before the load that you would hit by slowfall
As a bonus if you need it (for example hecked up the soul collection from archives) you can gather soul off the spiders.
To have full soul during the dupe, assuming you hit the free big jelly + all small jellies in archives (and didn't have soul after uumuu), and get the rng dnail, you need 3 hits of soul. One on the small jelly, two by killing two of the three big jellies. The third one is free, you can hit the first one for soul if it's up (first clip), or the second one, even if it is too far right (second clip).
6