Sulfuric Water and Nausea Potions!

Potent sulfur block if placed under other water sources, outside its original biome, should change color of the water in a 10 by 10 area above the potent block and place more potent blocks next to it to increase the range, which can be adjusted.

Nausea Potions made with bottles of sulfur, this way its renewable. Obtained by trapping the noxious gas that bubbles up from the water in an empty glass bottle, much like collecting dragon's breath. When brewing nausea potions, the bottle should eject after sulfur is used like making lingering potions. This will allow survival players to use this rare effect in minigames without forcing one to eat pufferfish.

I saw someone else post the sulfuric water in the biome should be its own liquid so I wanted post this alternate version.