False Life
Source: Player's Handbook
1st-level necromancy
Casting Time: 1 action
Range: Self
Components: V, S, M (a small amount of alcohol or distilled spirits)
Duration: 1 hour
Bolstering yourself with a necromantic facsimile of life, you gain 1d4 + 4 temporary hit points for the duration.
At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you gain 5 additional temporary hit points for each slot level above 1st.