User blog comment:TheHandsomePlant/Modern Day Part 1 levels/@comment-27249473-20151214163906/@comment-5792287-20151215155530

Thyme Warp does not need to be in all worlds, and if it gets put into all worlds, it needs INSANE, MASSIVE nerfs to balance it. The reason it's world-exclusive is as a half-a***d attempt to balance it so it doesn't make every world a cakewalk.

As for Gold Leaf, that thing has no reason whatsoever to be world-exclusive.