Free hit of soul you can get after defeating Marmu, loses no time assuming you have wielder on and are dream gating out after the essence. In TE it lets you skip the soul totem before Traitor Lord which saves 0.7, but probably useful in other categories like 112. The petra isn't there 100% of the time but it is still very worth it on average to go for.
Consistent 2 shriek marmu kill. Dream nail at the right side of the bush, hold right and shriek asap, stop holding right and jump shriek. Important to not jump too high, else marmu will hit you often. I tend to just cancel my jump by using shriek. How far right you get is more lenient than the height. Just make sure you are at least at the right side of the bush