Biome Sight Potion

Cleanup. Once you are chasing the last infected blocks out of a world, the problem is not killing the spread, it is finding it. This paints every corrupt, crimson and hallowed tile in a color you can pick out at a glance, including the stone, sand and ice deep underground where there is no colored grass to give it away.

The highlight applies to unlit tiles. Flood a tunnel with torches and you lose the effect exactly where you were looking. Run it with your light sources put away, or fly scan passes through unlit caves rather than working from a lit base.

It catches grass, vines, thorny growth, wild plants, the evil mushrooms, stone, sand, hardened sand, sandstone and ice for all three biomes, so a clean sweep really does mean clean. In the special world seeds it also picks up the flesh and lesion blocks those worlds generate.