Cave Snares

In the new cave update i feel as if it did not expand on the idea of the deeper you go the deadlier it gets. So i thought of having this mob that sticks to the top of caves and acts as a Barnicle from Half Life where they slowly pull you up and eat you. I was thinking the only way to get out of this is by destroying the snare's sticky vine before hand and or hitting the mob on the way up making more of a use for feather falling where it is there if a fall accident happens. Or a book you can enchant to kill any nearby snares.