Thoonder's Ceremony

You perform a fiendish rite, calling upon the infernal power of your patron to bind, corrupt, or shield others. When you cast this spell, choose one of the following rites. A creature can benefit from only one ceremony at a time.

Abyssal Baptism. You touch one humanoid who has reached adulthood. For the next 24 hours, the target can roll a d4 and add it to attack rolls and saving throws. A creature can benefit from this rite only once.

Profane Union. You touch adult humanoids willing to be joined. For the next 7 days, each target gains a +2 bonus to AC while within 30 feet of the other. If one drops to 0 hit points, the other takes 2d10 psychic damage.

Infernal Oath . You touch one willing creature. For the next 7 days, the target gains a +1 bonus to AC and saving throws while keeping an oath sworn during the ritual. If they willingly break the oath, they take 4d6 psychic damage and the effect ends.

Desecrate Water. You corrupt up to 10 gallons of water. The water becomes Desecrated Water until destroyed or purified with dispel magic. A creature that drinks it must succeed on a DC 13 Constitution saving throw or take 2d8 poison damage and be poisoned for 1 minute. Fiends and undead instead regain 2d8 hit points when drinking it.

Funerary Rite. You touch a corpse. For the next 7 days, it can’t become undead except by a wish spell. The body is marked with your patron’s brand.

Mark of Damnation. You brand a willing creature with your patron’s sigil. For the next 24 hours, fiends are disinclined to attack the target unless it provokes them. If the target attacks a fiend, the effect ends.