More on potions, adjusting things. The unpowered 'box' is actually tiny, so that becomes the 'lower power potion' effect most of the time. Slowness/web gets to be a solid 3x3 box.
Notable improvements, fire resistance. The low power, witch-farmable one is a tiny glass cube with a dot of lava in the middle. It's like a light, but if it's on top of a tree it WILL burn through the leaves and set the forest on fire, in time. So that's like a delayed action firebomb, which is pretty neat.
The HIGH power fire resistance potion is a sphere of pure fire. It is flat out amazing. It'll set an entire tree on fire in an instant-FUMP! You can burn lakes and rivers dry as it will displace water for an instant, before the fire block checks to see if it's next to a solid block.
I will try to implement the 'poison turns stone to feesh' routine, but not tonight.