Cyber Visor

Hostile mobs within 12 blocks get a glowing outline, also through walls. Only you see it.

The radius doesn't add up with other items: the largest one wins. Cat Ears reach 16 blocks and Wolf Ears 24, so next to either of them the visor adds nothing but its Drip. What it has over them is the slot: it sits on the face and leaves the Head Accessory slot free for headphones, a hat or a hair clip.

The recipe takes one Neon Quartz, which is mined in the Nether.