Spooky Fantasy Ghost Messenger Bat

For this Spooky Fantasy Art Jam, I started with the question: How do ghosts send messages to one another? They whisper, they screech and wail, but how would one ghost send a message to another ghost far away? 

After deliberating, I created a creature design for a ghost/undead messenger bat! They have strong, large ears to listen to ghostly whispers, and they can relay the ghost messages in screeches too! I really want this creature to be a "grunt" character design, with low level stats and a fun item it can drop for an adventurer if it is defeated. Therefore, it's blind, with a large head, and it is powered by a magical coin that a necromancer used to bring it to life. I'm hoping this toes the line of Spooky, Fantasy, Horror, and Adventure!