Warden's bone: the new Warden's drop

Descending into the underground city, players are currently pursuing the goal of obtaining reinforced deep slate blocks. They can only move them with pistons and slime blocks, and use them for their own purposes. My idea is that the player has a choice: either come and steal these blocks unnoticed, going through a bunch of manipulations with excavation of the area and building slime machines, or fight with Warden and make it easier for himself to get these blocks. Thus, developers can further improve Warden, make him smarter (add the ability to break blocks, and not shoot some kind of death ray) and strong, and the efforts of both developers and players will pay off and will not be spent in vain.

Upon death, Warden should drop a special item called "Warden's Bone". This item is very strong and dense, so it cannot be sharpened and reforged.

And it will be used in the crafting of a new pickaxe, which will have enough strength to break the very reinforced deep slate. The durability of this pickaxe will be much higher than that of the netherite one, but at the same time, the new "reinforced pickaxe" will not be enchanted for mending.
This pickaxe will be crafted with a netherite pickaxe, for example, with the "efficiency 5" enchantment, and, accordingly, the bone itself. Crafting will be carried out on a smithing table or anvil.