Synthoil is a passive item.
- Synthoil, or as it should correctly be spelled as "synthol", is a mixture of oil, lidocaine, and alcohol used to artificially increase muscle volume through scar tissue formation.
PC NFVA 693K (First floor Boss Room)
|The Binding of Isaac: Rebirth|
|Achievements||Attributes||Bosses||Cards and Runes||Challenges||Chapters|