The Storm Sword is Rain's weapon of choice in Mortal Kombat: Armageddon. It is a single-edged curved sword made of bronze and has the logo from his cape etched into the blade itself. It also has a tusk as its pommel.
- In Mortal Kombat: Armageddon's Krypt, it is revealed that Rain was originally going to have "Holy Leaf Blades," which are leaf-shaped daggers.
- It is revealed that Rain found the blade in a state of disrepair and later restored it to its seemingly current status.
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