Nether Fauna 1: Glownacle

The Nether hasn't gotten any particularly interesting mobs (or any particularly interesting additions for that matter) since Beta 1.9. That's far too long of a time for the Nether to not have any attention. So, I propose 3 mobs separated across multiple posts - because rules - that could be added alongside other peoples' Nether-related suggestions to make the Nether less boring.

The Glownacle would be an immovable stationary mob that sticks to blocks like a Shulker. Two or three would spawn on any Glowstone clusters found in the Nether. It'd look like a barnacle made out of Glowstone, but its beak would look more like very rough Quartz. If a player gets too close, the Glownacle would periodically open up and spit out a chunk of Quartz, that only deals 1 damage regardless of difficulty. If a player manages to get right up to it, they'll instead be bitten, which will deal 4, 5, and 8 damage for the respective difficulties. If killed, the Glownacle will be guaranteed to drop 2 glowstone dust with a 5% chance of dropping a single quartz.