Basiliskbane ore is made by casting Tune Bane Ore on a basilisk item with Bane ore in the inventory, requiring 87 Magic and giving 90 experience. The basilisk head can be in the inventory, or in a player-owned house. Doing so brings up a Make-X menu, allowing all of the ores to be attuned in one click, immediately. With 77 Smithing, it can be smelted into a Basiliskbane bar.
Note: These items are not consumed when they are used to tune bane ore.