The Viper

You have taken an unbreakable pact with a venomous Deity, Either "The Great Serpent" or more commonly known as the "Master of Poisons and Shadows" Zehir or Another such Deity. Such power a Deity does have, they are willing to impart this power into you, however at a cost. Will you subside to this power, how will it change you, for good or for evil? Will you allow this unbreakable bond to change your allegiances? will you use this bond to fulfil you or your deity's desires, only time will tell.

For some additional features please calculate your Strength Spell Save as 8 + proficiency bonus + Strength modifier.

Spell Level	Spells
Cantrip	Poison Spray, Acid Splash
1st	Detect Poison and Disease
2nd	Acid Arrow
3rd	Vampiric Touch
4th	Blight
5th	Contagion
6th	Circle of Death

Poison Imbuement

Starting at 1st Level, you can imbue your Martial/Simple Weapon, (12x Arrows if Ranged,) with Poison for the cost of 1 Action. This poison is a unique strain, the recipe taught to you from your deity. Yourself and the Deity of your choosing, revise the recipe of this poison over time as outlined below.

1st Level - 1d8 Extra Damage

4th Level - 2d8 Extra Damage

6th Level - 2d8 Extra Damage, +2 to Hit

8th Level - 2d8 Extra Damage, +2 to Hit, Reduced Speed (10 feet) until the end of the creatures next turn.

Note: Poison can be applied to Pact of the Blade, the Poison Imbuement lasts through being shunted into the extradimensional space.

One with the Viper

Starting at 6th level, your Deity has invoked the powers of the Serpentine Spirits upon you, you can now summon a Serpent spirit that surrounds and encompasses you as a bonus action, this Summoned Spirit acts with your commands and while being surrounded with the serpent spirit you can only do the following offensive actions.

Bite. Melee Weapon Attack: +Strength Modifier to hit, reach 5 ft., one creature. Hit: 6 (2d8 + Strength Modifier) piercing damage. Each level 8,11,14,16 you gain an additional 1d8 

 

Note this can stack with your poison Imbuement

Your Bite at 8th level gains the feature, each Bite can Poisoned if that target fails a Constitution Saving throw.

Constrict. Melee Weapon Attack: +Strength Modifier to hit, reach 5 ft., one creature. Hit: 6 (1d8 + Strength Modifier) bludgeoning damage, and the target is grappled. On the creatures next turn it can make a Strength Saving Throw against your Strength spell save to end this condition. Until the grapple has ended, the creature is restrained, you cannot Constrict more than 1 creature at a time. This attack cannot be used as a reaction. You can only Constrict creature sizes that are 1 size larger or smaller than you. Each level 8,11,14,16 you gain an additional 1d8 

Poison Mastery

Starting at 10th Level, you have learned to master the forbidden arts of poison, in doing so you have also learned what remedies to create to make yourself resistant to poison damage.

Mastery of The Viper

Starting at 14th level you have mastered control of the Viper, and can now summon a(one) Viper Spirit as a separate entity from your body for a duration of (1min) this summon requires 1 Action to complete. It takes its actions on your turn, however it does not count towards the Players action count. It can take (1) action only per turn, either Bite or Constrict and can use only Bite as a reaction.

The Viper Spirit 

Large Creature, Chaotic Neutral

Armor Class: 16 Natural Armor

Hit Points: 42 (6d10 + 9)

Speed: 30 ft.

STR       DEX       CON       INT       WIS       CHA

16(+3)  10(0)    18(+4)    6(−2)   14(+2)   13(+1)

Saving Throws Str +3, Con +4

Damage Immunities poison

Condition Immunities poisoned

Senses darkvision 60 ft., passive Perception 10

Languages understands the languages you know but can’t speak

Actions

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one creature. Hit: 28(4d10 + 8) piercing damage, reduced Speed (10 feet) until the end of the creatures next turn. Each Bite can cause the status effect Poisoned, if that target fails a Constitution Saving throw of (17) or lower.

Constrict. Melee Weapon Attack: +7 to hit, reach 5 ft., one creature. Hit: 19(3d10 + 8) bludgeoning damage, and the target is grappled. On the creature's next turn it can make a Strength Saving Throw against a Strength spell save of (16) to end this condition. Until the grapple has ended, the creature is restrained, the Spirit cannot Constrict more than 1 creature at a time. This attack cannot be used as a reaction. the Spirit can only Constrict creature that are 1 size greater or smaller than it.