Oxidize

The cheapest, most ruthless artifact answer green ever got, and the one that defines the difference between a scalpel and a Swiss Army knife. Naturalize and Disenchant cost two mana and cover enchantments too; this throws that flexibility away to undercut them by a full mana, betting that in an artifact-saturated environment you only need the one target type. That bet is the whole identity. The "can't be regenerated" clause is not about indestructible (an indestructible permanent ignores "destroy" outright, so the line does nothing there): it exists to beat regeneration shields like Welding Jar, the cheap defensive tricks an artifact deck leans on to keep its key piece alive. Strip the shield, kill the linchpin, spend a single green mana doing it. Green's slice of the color pie has always cast it as the natural enemy of artifacts and enchantments, and this is that hostility distilled to its sharpest single point: useless against an opponent with nothing worth destroying, devastating when one artifact holds their plan together. It is the answer you bring when you already know exactly what you are answering and want to pay as little as possible to do it.