Death Touch (5e Spell)
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You touch a creature and attempt to end its life instantly. It must make a Constitution saving throw, taking 10 necrotic damage on a failure.
This spell automatically fails if it targets a creature with more than 10 hit points.
At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, it deals an additional 1d10 necrotic damage for every level above 1st. In addition, the threshold for spell failure increases by 10 hit points for every level above 1st.