Atheist Vampire

HP (first phase): 75

HP (second phase): 200

This vampire don't believe in any god, is atheist. Vampire is very science and is very smart. Vampire realises that almost every weakness to vampiers (salt, "holy water"/alcohol, silver, garlic) are all antibacterial or used to cure meat. Therefore this vampire harnesses the power of salmonella and shoots raw meat out of his cannon.

It's only weakness is my homebrew item(fabreeze). Fabreeze deals 3d6 damage (and 1d4 poison), of the vampire is in first phase Fabreeze will stun it (it won't in second phase). 

Cannon (1st and 2nd phase): Ranged attack that stuns you for 1 turn and deals 2 Damage and 1d4 poison. If in 2nd phase the poison damage is 2d6 for 3 turns.

Stab (1st and 2nd phase): Melee attack that digs deep through your skin doing 1d8 damage (2d8 in 2nd phase) and 2d6 halved and rounded down (5d4 halved and rounded down in 2nd phase).

Salmonella Riffle (2nd phase): Ranged attack that poisons enemies and lowers their attack by half. The poison damage is 4d8 halved and rounded for 2 turns.

The vampire can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The vampire regains spent legendary actions at the start of its turn.

Science: The vampire doubles its attack but can't move for 1 turn.

Everybody wins: Heals but buffs players attack power by 50%