Blood Feast

make a melee spell attack against a creature. On a hit, the target would take 5d10 necrotic damage, The caster would then gain temporary hit points equal to half the damage dealt.

In addition, the caster would gain one of the following benefits for 1 minute:

• Advantage on Strength checks and saving throws.
• Advantage on Dexterity checks and saving throws.
• Advantage on Constitution checks and saving throws.

The caster could choose the benefit they want when they cast the spell.