The Acorn (bound)

Wondrous Item Varies (this item requires attunement) [To attune to The Acorn, one must ingest it. After that it is attuned for life. It can only be removed by a wish spell which destroys it.]

Passive effects:

• 20 tf. tremorsense
• Radiant damage resistance

• At will: Thorn Whip, Entangle, Barkskin (self; as many times as your constitution modifier per day, a minimum of once)
• Special: When you recieve radiant damage, you can use your reaction to cast the Filth Fever, Blinding Sickness or Seizure part of the contagion spell on the attacker, without expending a spell slot.