Blood Pact

This spell links you and up to two willing creatures within range for the duration of the spell. Each creature within 100 ft of another target of the spell are considered linked, having their vitality and magical power shared among them.

While linked a creature gains the following abilities and they can activate for as long as you are linked with a creature, and they are not under any spell or effect that would change them into another creature such as the Polymorph spell or the druid feature Wild Shape:

Borrowed Vitality: As a bonus action you can cause a targetlinked creature to take an amount of necrotic damage of their choice, which can’t be reduced in any way. You then regain hit points equal to the damage dealt.

Mana Reave: As a bonus action you can syphon magic from another target of the bloodpact. The target can choose to expend any number of spell slots, you then regain spell slots with a combined level equal to the amount expended. You cannot gain spell slots of 6th level or higher.

Absorption: You can as a reaction to a linked creature you can see taking damage, give that creature resistance to that damage. You then take necrotic damage, which can’t be reduced in any way, equal to the damage dealt to the linked creature.

The spell ends if you drop to 0 hit points or if you and a target become separated by more than 100 feet. It also ends if the spell is cast again on either of the connected creatures. You can also dismiss the spell as an action.

When you cast this spell using a spell slot 5th level or higher, the number of targets increases by 1 for every slot level above the 4th. If cast with a 9th-level spell you can target any number of willing creatures within 30ft of you and the spell doesn't require material components.