Buff
Spider Brain
Spider Brain is a Terraria buff. 
Brain in a Jar gives this buff.
What it does
It's crawling around... icky
Type
- Buff: it helps you.
- It is a pet buff.
- The game shows no timer for it.
Given by
Items
| Item | How | Duration |
|---|---|---|
| Brain in a Jar | Use or equip | While active |