Nether Reactor Core / Nether Beacon (New Use!)

The Nether Reactor core is made with Netherite and other nether related items, and when made It is like a Beacon but It has perks like fire resistance and see better under lava and more. But when placed in the overworld it starts spawning random nether mobs around it. It is hard to Make because you need -

4 Netherite ingots, Ghast Tear, 2 blaze rods, and 2 Gold blocks. 

When in the overworld if you want it to keep spawning random nether mobs you keep feeding it glowstone. But it spawns less mobs than a spawner and they are harder to kill. When you defeat all the mobs in it then it spits out random nether items as a reward and it then has a cooldown which you can change in the settings to have an infinite cooldown.

This should be added because it would be an interesting addition and also add something that minecraft dungeons kinda has with the gate events. It would have to be perfectly balanced to fit the game.