Medium's Rod (Patreon)

Rod, uncommon (requires attunement by a spellcaster)

While holding this rod, ghosts and similar incorporeal creatures have disadvantage on attack rolls against you, and you can't become possessed. The rod has 3 charges and regains all expended charges daily at dusk.

Cursing Flames. You can use an action while holding the rod to expend 1 or more of its charges to hurl ghostly flames at a target within 60 feet of you. Make a ranged spell attack for each expended charge, using your spell attack bonus; each attack can be against the same target or different ones. On a hit, the target takes 2d4 fire damage and is cursed for 1 minute. While cursed, the target can't benefit from being invisible, and you can use an action to automatically deal 1d4 fire damage to it for each flame it's cursed by. The curse ends early if the target is ever more than 60 feet away from you. If the target is reduced to 0 hit points while it's cursed, the curse ends, and you regain 1 charge for each flame it was cursed by. The fire damage dice become d6s and deal radiant damage if the target is undead.

See Invisibility. While holding the rod, you can use an action to expend 1 of its charges to cast the see invisibility spell from it. For the duration of the spell, you have advantage on Charisma checks made to interact with undead.

"Spirits! You needn't suffer the realms beyond: come forth, and be at peace at last. Begone!"