As mentioned in this post, me and other players discovered a somewhat complicated mechanic lol, but unfortunately it doesn't work and it causes a very strange bug :
when you use Echo me on a mob to turn him into the decoy, then Poof you on the decoy, and then throw the object into the void (even when executing the technique very quickly), the mob always returns to its original location, as if nothing happened. It teleports back, no longer being an object, even though it's supposed to have died in the void.
I know there are other ways like shrink-ana or fish yuk, but this technique could be great if you have a cooldown on shrink-ana, or you only have an illusion wand. Even using Aero to push the decoy into the void is sometimes impossible.
Oh and some people say that this bug also occurs with shrink-ana and fish-yuk, but personally, I have only encountered it with the technique described in this post.
https://www.reddit.com/r/YAPYAPgame/comments/1sjup9z/illusion_wand_woes/