You get Warden's scream, his strength and endurance, his sense of smell. The sense of smell is up to 10 blocks. I'm waiting for your feedback to improve it. Note: It's under development, so it's not available in survival mode. In Creative mode, it's located at the bottom of the weapons tab without a logo, and you must equip it as a helmet.
How to use the shockwave: Pressing the crouch button will cause you to let out a loud scream.
How to use the radar (sniffing): When creatures are approximately 10 blocks away, the block proximity will be displayed in a bar at the bottom.

