Bonus Proficiencies. At 1st level, you gain proficiency in heavy armor and martial weapons.
Spellcasting. Cleric Snake is a 1st-level spellcaster. Its spellcasting ability is Wisdom (spell save DC 14, +6 to hit with spell attacks). Cleric Snake has following Cleric spells prepared:
Cantrips (at will): spare the dying, sacred flame, toll the dead
1st level (2 slots): thunderwave, fog cloud, inflict wounds, guiding bolt, bless, bane, cure wounds
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) piercing damage.
Constrict. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) bludgeoning damage, and the target is grappled (escape DC 15). Until this grapple ends, the creature is restrained, and the snake can't constrict another target.
Wrath of the Storm. You can thunderously rebuke attackers. When a creature within 5 feet of you that you can see hits you with an attack, you can use your reaction to cause the creature to make a Dexterity saving throw. The creature takes 2d8 lightning or thunder damage (your choice) on a failed saving throw, and half as much damage on a successful one.
The Cleric Snake can use this ability 4 times.