When summoned to the Sanctuary by Thanos, Ronan was warned by The Other to show the Mad Titan courtesy. Annoyed by the vizier's ranting, Ronan used the Cosmi-Rod to twist the Other's head 180 degrees, killing him.
Once he obtained the Orb, Ronan placed the Power Stone in the Cosmi-Rod, enabling him to use its power. By doing so, he was able to destroy the Nova Corps' entire fleet during the Battle of Xandar. Drax the Destroyer destroyed the Cosmi-Rod with the Hadron Enforcer, enabling Star-Lord to catch the Stone with his bare hand.
Built from advanced Kree technology, the Cosmi-Rod is an effective tool in battle.
- Concussive Blast: The Cosmi-Rod can fire a blast of concussive force that was strong enough to twist a person's head around 180 degrees and to send small groups of people flying several meters.
When merged with the Power Stone, it has also displayed various other attributes such as:
- Energy Projection: When combined with the Infinity Stone, the Cosmi-Rod is capable of discharging purple blasts of concentrated energy.
- Planet Killer: When combined with the Infinity Stone, the Cosmi-Rod had the potential to obliterate an entire planet, but the stone was wrenched from the hammer before Ronan was ever given a chance to do this.
- In the comics, the Universal Weapon is the regular weapon given to the member of the Accuser Corps of the Kree Empire.