You put out a request for aid in the abyss. After casting for an hour make a DC 11 charisma saving throw. On a fail you take 2d4 psychic damage, on a success a fiend of CR 2 or lower (what fiend comes is up to the DM) controlled by the DM will appear. The player then has the option to bargain with the fiend in order to gain it's help. If the DM decides that the player has offered a fair deal then a contract will be written. For the duration the Fiend will be under the player's control. The fiend will collect it's payment after the 3 day timer has expired. A player may only have one contract at a time. If a player attempts to make a new contract then the fiend will become hostile towards the player.
When cast at a fourth level spell slot the CR of the fiends goes up to 3.
* - (A piece of parchment, a quill, ink)
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