I'm aware that you're not making the Godsword from scratch but it's still a much more powerful metal given how hard it hits.. but still rune weapons don't have special attacks either. :
Adamant axe - OSRS Wiki
3rd age axe | Old School RuneScape Wiki | Fandom
SCIMITAR / OSRS Style Sword / Rune Adamant Mithril Bronze Iron Steel G – 3DPrintIt4Me
OSRS: The Best Woodcutting Axes (Ranked) | Gaming Gorilla