This tank is relatively easy to build and even buildable in Survival. It can shoot fireworks or fireballs.

The idea comes from the Youtuber cubfan135.

Instructions:

For the tank you need:

- Clay blocks (34,color does not matter)
- Quarry stone stairs (32)
- Quarry stone(3)
- Quarry stone step (1)
- lithographic plate (1)
- Thrower (1,NO donor!!!)
- Water bucket (1)
- Shield (1)
- Quarry stone wall (2-4)

- Fireworks/fireballs for the thrower

Optional:

- Button (20,Stone)
- Rail (12,normal rails)


That's how you build the tank:



First you build a row of six clay blocks of one color.three blocks next to it you repeat this.
Place four different coloured clay blocks on each of the two rows.



Then connect the two sides by placing inverted steps between them.on the back side, normal steps are placed on top of the inverted steps, so that their undersides touch.in front, do the same, but place two clay blocks behind the outer steps.the middle step is removed again.



The space that has now been created is filled with clay.in the back in the middle you build a dispenser.in front of it you now put water.since the water now flows out,a sign is placed on the stairs next to the hole.the rows next to the thrower and the water are also built up with blocks of clay.



Around the water and the launcher, quarry stone steps are placed on the clay and around the launcher the rows are extended a little so that the launcher remains free.



Behind the quarry stone block,that means in the direction of the launcher,two more quarry stone blocks are placed.on the second one a stone step is placed.to hide the water,the stone step is placed over the water.now the launcher can be filled with firecrackers or fireballs.after that a pressure plate(press shift,then place)is placed on the launcher.



Lastly, take some quarry stone walls and place them on the block above the sign.
As a small detail, you can also place tracks and eventually buttons on the sprockets.


Note: You can also replace the materials with others. (e.g. wool instead of clay)

(If you don't understand something or there are mistakes in the description,please write it in the comments. :) )