Falling off Lower Ascent.

There's a bit of time right after when you get hit when you can't be affected by those insta-teleport things, so if you touch the ground soon enough after you get hit, you'll end up on the platform and not Valley of Heroes 2.

During some skills (booster is one, yes) and while spamming items (pet food, potions etc) you're also immune to the teleport things.