Cursed Dye

Instead of black dye, the Wither Rose can be used to craft Cursed Dye. An even darker black, any Cursed blocks will hurt the player when nearby, you don't even need to stand on top of it. Great for creating pufferfish-like traps around friends bases and even better for your enemies. Cursed beds explode in the overworld and SUPER explode in the Nether and End. Could be a very fast way to find Ancient Debris, or kill the Ender Dragon.

Also, when you craft cursed dye with poisonous potatoes, you die, instantly. The death message could read something like: "Player_Name dyed whilst trying to make poisonous potatoes useful".