The godsword shard 1 is a drop from the bosses and sub-bosses in the God Wars Dungeon. It is used to make a Godsword, by using it on an anvil with Godsword shard 2 and 3, creating the Godsword blade. Doing this requires level 80 Smithing and gives 100 Smithing experience.
To then make the Godsword blade usable, a hilt must be attached. Hilts can be removed after being attached. Attaching and removing hilts does not have a Smithing level requirement. Changing a hilt only changes the Special attack of the Godsword - its bonuses remain the same, regardless of hilt.
For an exhaustive list of all known sources for this item, see here
|Balfrug Kreeyath||151 ||1||1/1,524|
|Commander Zilyana||596 ||1||1/762|
|Flight Kilisa||159 ||1||1/1,524|
|Flockleader Geerin||149 ||1||1/1,524|
|General Graardor||624 ||1||1/762|
|K'ril Tsutsaroth||650 ||1||1/762|
|Sergeant Grimspike||142 ||1||1/1,524|
|Sergeant Steelwill||142 ||1||1/1,524|
|Sergeant Strongstack||141 ||1||1/1,524|
|Tstanon Karlak||145 ||1||1/1,524|
|Wingman Skree||143 ||1||1/1,524|
|Zakl'n Gritch||142 ||1||1/1,524|