Uranium Ore

Uranium Ore/Bars is my idea for a post-Plantera Hardmode Ore/Bar. When within 15 blocks of the ore/bar, the radiation debuff is inflicted on the monster/player, doing minimal damage over time unaffected by defense doing around 5 damage. The Uranium Ore is spread about a world when the frost legion, frost moon, pumpkin moon, and golem have been defeated in a world, and and more will spawn for each time the player has defeated all 4 in that world, with the message: "You feel a tingling." or "Uranium Ore has appeared in your world!".

Mining
When mining, for each strike of the pickaxe, it deals hefty amounts of damage, this time it cannot bypass the defense of the armor. This damage is not caused when mining with the uranium pickaxe. The Picksaw takes 4 hits to mine one ore, the solarflare/nebula/stardust/void pickaxes 3, and the laser drill and Uranium/Depleted Uranium 1.

Crafting
Depleted Uranium- 2 uranium in a nuclear reactor (causes an almost non-damaging explosion similar to the grenade each time crafted)

Uranium Tools/Armor- These tools give immunity to radiation when coming from the block being mined (besides the radiation debuff), while the armor gives immunity to it all, while inflicting the radiation debuff on nearby monsters (and players if PvP is on).

Depleted Uranium Tools/Armor- These are almost as good as the regular ones, needing a little more Depleted Uranium, and less iron/lead, as well as no uranium bars, but these aren't quite as good, and don't inflict/give immunity to the radioactive debuff. The bars are exactly the same look without the radioactive debuff.