You have made a pact with a floating sphere who serves a hivemind who calls themself The Flood, who already have gathered in your universe, but they do not say where. It says it will give you the intelligence of millions of worlds, if you just do what it wills.

Hivemind intelligence

You permanently gain the Telepathic bond spell and can use it without expending a spell slot. This spell also last indefinitely.  

Infection Form Sidekick

A Infection Form will follow you around for one hour, with the same stats as the Diseased Giant Rat. Only one Infection Form can be following one person. If one hour has passed from the time the Infection Form has formed, it will die and cannot be revived. After a hour passes or the Infection Form dies, there will be a cooldown of thirty minutes before another one can be formed 5 feet around you in a unoccupied spot.

Steal Intelligence

You can infect a live or a dead unwilling creature with a parasite that can access thoughts and memories. If the infected creature is dead, the parasite will revive its body for the remainder of the infection. When a creature is infected, the host will receive the Paralyzed status, and you will gain any information the host knew or thought in the last 24 hours, taking 10 minutes. When the 10 minutes is up, the parasite will die, and the host will take 1d10 piercing damage. A host can only be infected one time.

Infection

Whenever your Infection Form Sidekick kills a enemy, you can choose as a bonus action, to infect a corpse with a 5 CR or less with a parasite, reviving the creature and turning it under your control. The new creature keeps the host's weapons and spells, but it gains +1 HP and +2 damage for each level you gain with The Hivemind (along with the host's original stats). The infected host lasts for 24 hours or until it is killed. You can only have 4 hosts + your charisma modifier. 

 

 

 

Expanded Spell list

A list of spells that you always have prepared with this subclass

Prepared Spells
1st Level Spells	Bane
2nd Level Spells	Alter Self	Ray of Enfeeblement
3rd Level Spells	Animate Dead	Vampiric Touch
4th Level Spells	Black Tentacles	Polymorph