NPCs & Enemies cursed rock

[SaltyBeggar]

in terraria, when you go to caverns, you can press a pressure plate that make a giant rock fall (idk the name of that giant rock), so, it a cursed version of this rock that is a enemy
in terraria, just have one enemy which can appear as surprise, the nymph, but, one time you found it, you dont will be trapped by the nymph again, because you will always be prepared when you find the lost girl, the cursed rock, no, because it will appear in surprise, you just will prepare if you see the rock above you
let get started:
cursed rock:
hard-mode enemy
will fall in the player when a pressure plate is pressed
life: 500 | 700 (yellow mean expert) | 1000 (green mean post - plantera) | 1250 (dark green mean post plantera and expert)
damage: 100 | 150 | 200 | 250
AI: same of angry tumbler but more slower | same of the angry tumbler with the same speed | same of the angry tumbler with the same speed | same of the angry tumbler but a bit more faster
defense: 10 | 15 | 20 | 22
sprite: will be posted later
drops:
rocks: 1 - 5, 100%
souls of night: 1 - 3, 5%
rock gun: 2%, use stone as munnition, 60 damage, auto-shoot, low speed and usetime, high knockback

 

[Lord Garak]

There is no need for this as boulders already have a mind of their own and will follow a player to the end of the world.

 

[temery2383]

There is no need for this as boulders already have a mind of their own and will follow a player to the end of the world.

Lol, it certainly seems that way sometimes.

 

[Blazmatic]

nice, now I have to worry about an enemy that I cannot damage and can 1 shot me brilliant idea

 

[|.Terrarian.|]

Perhaps having this idea take a slightly different route...an entirely NEW trap that makes a special mob spawn near you?

 

[ThatRandomBuilderGuy]

And why does this have a relation to Plantera?
And this would require several sprites, one for each underground biome.