Sub-divine Artifacts are the lowest tier of creations forged by Divine Power, at the starting stage; if they encounter the right opportunity, they can continue to grow and evolve.
That opportunity is, naturally, the convergence of relevant faith, and the War Ravager in Gaven's hand is the best example.
By seizing the Undead Divine Power of the Undead Goddess of Revenge, it shaped itself into a Sub-divine Artifact.
After that, by riding on Lady Strategy's Ascension war, it stole a massive number of Souls, slew and purified one Divine Nature Incarnation of Plunderer Karazgos, and, with the Divine Nature Force Lady Strategy infused into it, it made a second-level leap and shed its shell to become a High Tier Divine Artifact.
