Homebrew
Nature +1, Perception +4, Stealth +5
Chirpy Companion. The Clover can make soft rustling sounds and mimic simple noises, like whistles or musical notes. It can communicate basic emotions and "yes/no" concepts to its bonded companion through subtle movements and tones.
Tiny but Tenacious. The clover can cling to clothing, curl up in a pouch, or ride on an ally's shoulder. It can squeeze through gaps as small as 1 inch in diameter and is considered always hidden while motionless in foliage or grass.
Bond. The clover feels deeply attached to the one who planted it. If separated by more than 1 mile, it becomes listless and droopy until reunited. The clover can form weaker bonds with other allies over time.
Lucky Presence. Once per day (at DM's decision), the clover can grant a reroll to a friendly creature within 10 feet of it.
Wiggle of Encouragement. The clover can dance, shake, or sway in a heartening manner. One creature it chooses within 10 feet gains 1d4 temporary hit points and has advantage on its next saving throw against being frightened. Once per day (at DM's decision).