The arcane lamp is a useful light source that makes an entire 16x16 area mob spawning free. Placing it on the bore-base of an arcane bore will light up the tunnel the bore digs.
"This mystical lamp can be attached to walls, floors or ceilings and will provide strong and steady light.
Additional sources of light may also appear up to 16 blocks away whenever light levels fall below accepted 'safe' levels. Remember: Only YOU can prevent zombie outbreaks.
These Secondary sources of light will disappear soon after the lamp has been removed.
You are sure additional uses for this lamp will present itself, so remember to check here after making new discoveries."