MIGHTY THOR (1989) #439

Dargo, Thor II, and Stellaris continue their battle, Dargo believing that Thor II will be responsible for the destruction of his timeline; Stellaris decides to let the two of them go at it; Its all a ruse by Zarrko to collect energy from their hammers to power his Radical Time Stabilizer; Beta Ray Bill feels the mystic shockwaves from the colliding hammers and goes to Earth to investigate. Tales of Asgard back-up, « Where Monsters Dwell! », script by Tom DeFalco, art by Patricke Olliffe; Balder and Sif find the sword needed to free Hela but accidentally release Gar-Toom.