The Thor-Destroyer advanced on Malekith preventing the dark elf from attacking his oath brother again by cancelling the frigid cold of the Casket with the fiery breath of the Destroyer.
This madness ends now! Malekith the Accursed I cast thee out, the bones of thy kin and thy kith shall litter the shores of Niffleheim! Thor was speaking through the Destroyer - his soul powering the great and terrible armor. Thor raised the Odinsword high gripped with both hands. Asgardians knew to run like Hel from this as it was an attack normally only Odin himself could unleash. He was drawing upon every power he could - the belt of strength, the Warrior's Madness and the Odinforce which coursed through his veins to prepare an attack of unparalleled power like unto Ragnarok's entirety in a mere moment.
The berserker rage of Thor was legendary and dreaded for very good reason even by Asgardians because he could lose control and attack EVERYTHING!
FOR ASGARD!!!
And it came to pass that the Thor-Destroyer unleashed a colossal wave of godly energies that swept through the Golden City incinerating any foes it caught in it's golden flames ignoring those defending the city and in the chaos the majority of the dark elven survivors escaped leaving their pawns to burn. The Thor-Destroyer dropped to a knee sticking the Odinsword into the ground.