2-level Necromancy (ritual)
Choose two target creatures within range that you can see. Each target creature must make a Strength saving throw. On a failed save, the creature is magically bound by this spell, otherwise they are unaffected. If no creatures fails the saving throw, or only one creature fails, the spell immediately ends. For the duration of the spell, spectral chains appear between the bound creatures, which harmlessly pass through solid objects and creatures. If a bound creature is damaged from a source other than this spell, all other creatures bound by the same casting of this spell take 1d4 necrotic damage + your spellcasting modifier. A creature can only take damage in this way once per round.
A creature affected by this spell can use their action to try to repeat the Strength saving throw, ending the spell for themself on a success. Also, If at any point during the duration of this spell a bound creature is more than 300 feet away, or on a different plane of existence, from any other creature bound by this casting of the spell, the spell ends for them. The spell also ends on them if they become incapacitated or die. If only one or less creatures are affected by this casting of the spell at any point, the spell ends.
At higher levels: When you cast this spell using a spell slot of 3rd level or higher, you can target one additional creature for each slot level above 2nd.