Destroy pressure plate.
Spend 50 seconds destroying obsidian beneath it.
Take all redstone wiring in sight
Or do this with either door.
EDIT: The tile in front of either door.
I sunk your battleship.
Construct an outer wall of obsidian, a middle wall of TNT and an inner wall of obsidian again. Make it so there is an NOT gate connected to the TNT. When the wiring is tampered with the TNT ignites, which opens a river of lava above the player, flooding the room and killing the player.
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I just wrote all of that so I could say:
Don't know if this has been posted here but I just found this out (only works on a snow map):
= Door
The snow forms over the door, but you can still fall through. When placed next to other snow, it creates a seamless merge between real snow and the fake snow covering the door.
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Construct an outer wall of obsidian, a middle wall of TNT and an inner wall of obsidian again. Make it so there is an NOT gate connected to the TNT. When the wiring is tampered with the TNT ignites, which opens a river of lava above the player, flooding the room and killing the player.
...
I just wrote all of that so I could say:
"You activated my trap card."
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= Door
The snow forms over the door, but you can still fall through. When placed next to other snow, it creates a seamless merge between real snow and the fake snow covering the door.