Blighted Obsidian Slab From Istaria Lexica Blighted Obsidian Slab Item type: Resource Tier: Tier 4 Ways to obtain[edit] Find ways to obtain "Blighted Obsidian Slab". This section can be empty if it is not available or wiki details are missing. Used for creation in Blighted Obsidian Brick Categories: ResourceTier IVItem Facts... more about "Blighted Obsidian Slab"RDF feedTier4 +