Forum:What is the name of the gun that you can only fire 1 time a day in borderlands? it shoots a satellite beam down from the sky

I found a gun recently on borderlands... but i cant remember the name of it. All i remember is you can only fire it once a day and it fires a big beam thing down from the sky and does a lot of damage and hits hard. Whats the name of this?!?!? And its not a modded weapon either...