This staff has 10 charges and regains 1d6+2 charges each day at dusk. When you hit a creature with the staff as an attack action you can expend 1 charge to add 1d6 necrotic damage to the attack. Each additional charge adds another 1d6.
Spellcasting: You can use an action to expend charges to cast these spells with the staff: 1 charge Inflict Wounds, 2 charges Vampiric Touch, 5 charges Bestow Curse
Decompose: You can touch a corpse and cause mushrooms and fungus to rapidly appear. They will decompose the body at an accelerated rate, causing it to disappear within an hour. You can do this a number of times equal to spellcasting modifier.