Assassin's Gift

As part of the action used to cast this spell, you must make a melee attack with a dagger against one creature within range, otherwise the spell fails. On a hit, the target suffers the attack’s normal effects, and necrotic energy surges from your blade. The target immediately takes 1d8 necrotic damage.  If the target hasn’t taken a turn in combat yet, you have advantage on the attack and takes an additional 1d8 necrotic damage.

This spell’s damage increases when you reach higher levels. At 5th level, you may make an attack with an additional dagger, dealing 1d8 necrotic damage on hit. Rolls for this spell are  increased by 1d8 at 11th level and 17th level.