Laser Emitter

Laser emitters, when powered, create a blue beam by default. You can right click the laser emitter with different modifiers:

Redstone: The laser beam will emit redstone current.
Nether Star: The laser beam will apply a severe debuff to anyone crossing it
Diamond Sword: The laser beam will harm any players or mobs to anyone hit by the laser.
Glass: Works similar to the Sword, but the laser beam is almost invisible
Diamond Pickaxe: The laser will slowly destroy and stone in it's path, using additional power.
Water Bucket: The laser electrifies water, dealing damage to all nearby entities in water.
Minecart: The laser pulls Mobs and Items hit by the laser inwards to the emitter.
Seeds: These create flux, based on conways game of life. At this time, flux has no practical purpose, it is intended as a fun, sandbox toy.
String:This is a tripwire laser. Whenever an entity crosses the laser, the laser emitter will emit redstone.

Crafting Recipe