Wraiths will also be summoned upon the destruction of a Demon Altar. The Wraith, like other creatures able to pass through blocks, can be damaged through walls with any melee weapon, as well as by spells such as the Vilethorn while they are still inside a wall.
When Wraiths are not passing through blocks they are unable to hover above about 3 blocks in height. Keep your NPCs above that height to ensure that Wraiths don't kill them.Wraiths are dark, which sometimes makes them hard to spot at night or when they pass through blocks. However, their eyes can give away their position because of the red color.
- Added to the game. 1.2