Hex

Casting Time: 1 bonus action
Range: 90 feet
Components: V, S, M (petrified eye of a newt)
Duration: Concentration, up to 1h (8h/24h)
Curse for +1d6 necrotic in your attacks.
Choose an ability score to debuff.
Target has disadvantage with chosen AS.
If {0} before duration, bonus action: new target.
Remove Curse dispels it.