This is my attempt at inventing a superweapon for my empire, called the Sunbuster.

The Sunbuster is a massive, 300 mile long and 100 mile diameter(center sphere) battle station. The Sunbuster has a synthetic star as its power source. Its main cannon can annihilate a star system from half a galaxy away, and the Sunbuster is defended by numerous fighter jets, Mark-1 and Mark-2 class warships, and anti-ship weapons.

"Muahahahaha! You fools must all have a death wish? Witness this invincible battleship, built by the hands of a genius! Its power, unmatched throughout the universe!"

Sunbuster - Me
Based on Death Star and Starkiller Base