Helioptile (5e Creature)
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Tiny elemental, any alignment
Sand Camouflage. The helioptile has advantage on Dexterity (Stealth) checks made to hide in sandy terrain.
Dry Skin. While submerged in water or outside during rain, the helioptile regain 3 hit points at the start of each of its turns.
Solar Power. During harsh sunlight, the helioptile has advantage on attack rolls, but loses 3 hit points at the start of each of its turns.
Mud Slap. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) bludgeoning damage.