Mysterious Amulet (portable buffs for debuffs)

It would be like an early-game beacon that gives you buffs you can choose in exchange for debuffs. Maybe you mine faster but your hunger increases the more your mining improves? Maybe you can move faster but take more damage from mobs? Maybe you just get lucky and find good stuff out of nowhere randomly but hostile mobs appear in areas they shouldn't? Maybe health depletes steadily but your hunger never does? You could breathe underwater but being too far away from it makes you feel sluggish?