You gain extra vitality from necromantic spells. During the duration of the spell, you gain 1d4+4 temporary health.

False Life 5e

Level: 1st

Classes: Sorcerer, Wizard

Casting Time: 1 Action

Range: Self

Components: V, S, M

Duration: 1 hour

When using a spell slot of 2nd level or higher to cast this spell, the temporary health granted by the spell slot you use is increased by 5 for every level higher than the spell slot of 1st level.