Fire of Savoir

The Fire of Savoir was a natural superweapon possessed by the force-sensitive planet Vitea. It took the form of a massive volcano on Vitea's equator, surrounded by a ring of smaller volcanic openings, all pointing their calderas inward towards the central volcano.

Function and Effects
When the living planet sensed danger, it would use the force's power to perturb its own magnetic field, causing the iron-rich magma inside to expand, forcing it through first the ring of small volcanoes, creating a massive lava-fireball in the sky, and then through the primary volcano, blasting all the lava into space in a straight ray. The perturbations in the magnetic field also caused other, smaller eruptions all over the surface of the planet.

The weapon was devastating to almost any attacker. The immense volume of lava expelled from the planet's insides could cover a huge area, making escape impossible. The fiery storm could obliterate even the largest and most powerful battleships. As the lava cooled, it created a lethal hail of meteorites, which could destroy incoming ships at a huge range.

History
The weapon is only known to have been triggered 3 times. The first time it was triggered it wiped out the fleet of celestial warships, pushing the survivors towards oblivion in the Galactic center.

The second time it was triggered, it wiped out the Death Fleet during Darth Krayt 's attack on the planet, and it was triggered a second time during this attack, destroying the Eliminator.

Behind the Scenes
The fire of savoir was supposed to be a bit like the Death Star's superlaser, except naturallly occuring (made of lava).

The Eliminator, which was used and destroyed at Vitea, was also at first a giant death star (with a purple superlaser) capable of destroying stars. The original concept was for the superlaser and the ray of lava to clash, a bit like in a lightsaber battle.

Vractomorph was 9 when he pictured this and now realizes that a lightsaber battle between a planet and the death star... well... kinda sucks.