Amulet of Batrachian

Amulet of Batrachian Wondrous Item, artifact, (requires attunement by a human or amphibian)

This crude frog-shaped amulet pf ancient gold belongs to Wastri, the Hopping Prophet. It is given to his most devout followers. It has the following properties.
 * Batrachian Sense. you can cast detect poison and disease at will.
 * Batrachian Blood. You have advantage on saving throws against poison from amphibians.
 * Batrachian Bond. You can cast speak with animals (amphibians only) once per day. While the spell is active, you can cast dominate monster (amphibians only) once, targeting up to as many amphibians as your character level. The amphibians must be CR 2 or lower.
 * Mutant Breed. Once per day, you can jump as if under the effects of the jump spell.