Disturbance Hymn

Whilst crawling in the shadows unseen by the prey, you reach down and touch the ground and recite the epitome of the reaper's mantra. Upon the finished reciting of the reaper's mantra small black tendrils ooze from your hand and into the ground, rushing towards two creature within 60 feet as long as they are within sight of the caster. Once it reaches the creatures the creatures must make a Wisdom saving throw (DC 8 + your spell casting modifier + your proficiency bonus).  The creatures are then touched by these black tendrils and will envelop the creature in a black transparent aura. Any successful attack made against a creature with the Disturbance Hymn adds 1d6 of necrotic damage to the damage calculation. Upon a successful save the creature is alerted to your presence but has halved movement speed until the end of your next turn. 

At Higher Levels- When casting this spell at 2nd level or higher levels you may add an additional 1d6 of damage for each spell slot above the 1st.