Disclaimer!!

Most of the trap block effect are destructive, and will replace or break block nearby it when triggered

Some block effect may cause lags (namely shower trap and tnt trap) so don't trigger too much of it at the same time

Some effect of the block replace the trap block, making it you need to craft them again

The effect are currently limited, if you have any suggestion or idea for a trap feel free to post them on the comment and if possible i'll make them into a block

Now to the information, this add-on added 12 block with 6 variant of oak planks, cobblestone, dirt, grass, gravel, sand

Each block have an effect that's triggered when a player steps on it, the top part of the block is the same as a vanilla/base game block so you can hide or camouflage it with a regular block

Here's the trap block list with a short explanation

obsidian trap

summon a 3x3 cube with the player submerged in water

lava trap

teleport the player and up places cobweb and lava under them and surround them in an Obsidian wall

sand trap

suround the player with obsidian and 128 sand above their head

TNT trap

surround the player in a hollow obsidian cube filled with TNT

Drip stone trap

surround the player with obsidian and place 128 of falling drip stone on top of them

Teleport trap

teleport the player 1000 block up

mob trap

surround the player in a cage with 8 zombie inside

Shower trap

Surround the player in obsidian and place a dispenser on top of them that shoots instant damage potion

Pumpkin trap

Replace the player head slot with a curse of binding pumpkin and give blindness effect (will destroy any helmet/hat equipped)

Clear trap

clear the player inventory

Hole trap

Dig an 8x8 block all the way to the void, (will only destroy block below it, but also work on any height)

lightning trap

summon 8 lightning (not necessarily deadly, but it will give them a scare)

Tips:

Due to minecraft rendering bug with custom block it may makes the block have a different shade than the regular block, it is recommended to place the trap block in a bright place or open skies

All block can be found in nature tab for creative, and can be crafted for survival, the recipes will be shown in the crafting menu/book

To make things balanced and to get an actual funny response, most trap doesn't instantly kill and can be countered here's a list to counter trap incase your friends try to use the traps against you

That's it for now, remember I'm open for any suggestion or idea for a new trap, please if you have them don't forget to say it in the comments

I hope you have a good day