Accursed Act

Lighting a candle, you speak dark curses in a lost tongue, directed at one creature you can see within range. That creature must make a Wisdom saving throw or be cursed for the duration. While cursed, whenever that creature takes the Attack or Cast a Spell action, it takes psychic damage  equal to 1d8 + your spellcasting modifier. The creature can repeat their saving throw at the end of their turn, ending the effect on a success.

 A remove curse spell ends this curse early.

 At Higher Levels. When you cast this spell using a spell slot of 2nd-level or higher, you deal an additional 1d8 psychic damage for each slot level above 1st.