Minecraft Java Custom Terraforming wand Tutorial for 1.16.1

Hi guys! This video will show you how to use the terraforming wands I have converted from bedrock edition. Originally, a reddit user came up with the idea and the code, and I asked his permission to convert it to the Java platform and also add my own touch. I will write the commands down below ready for you to copy and paste. They are interchangeable, so instead of sticks you could have any item, or instead of grass you could have gold blocks, you just have to change the item id's in the commands before you put them into your command blocks, but if you are new to this kind of thing, I recommend you to leave the commands as they are, and experiment with it.

***IMPORTANT***
Don't forget that all the command blocks are repeat and in the same section go "Block-Comparator-Block", the first block is set as an 'unconditional', 'always active'; and the second block is set as 'unconditional' and 'needs redstone'. IT IS LIKE THIS FOR EVERY PAIR.

==============================================
Preperation Commands:
--------------------------------------------------------------------------------------------
/gamerule randomTickSpeed 1000

/gamerule randomTickSpeed 1
---------------------------------------------------------------------------------------------
/give @p stick{display:{Name:'{"text":"BaseTerrain"}'}} 1

/give @p stick{display:{Name:'{"text":"GrassConvert"}'}} 1

/give @p stick{display:{Name:'{"text":"StoneConvert"}'}} 1
===============================================
Command blocks:
---------------------------------------------------------------------------------------------
/execute if entity @p[nbt={SelectedItem:{id:"minecraft:stick",Count:1b,tag:{display:{Name:'{"text":"BaseTerrain"}'}}}}]

[Comparator]-

/execute at @p run fill ^-2 ^-2 ^11 ^2 ^2 ^15 sand replace air
---------------------------------------------------------------------------------------------
/execute if entity @p[nbt={SelectedItem:{id:"minecraft:stick",Count:1b,tag:{display:{Name:'{"text":"GrassConvert"}'}}}}]

[Comparator]-

/execute at @p run fill ~-6 ~-6 ~-6 ~6 ~6 ~6 minecraft:grass_block replace sand
---------------------------------------------------------------------------------------------
/execute if entity @p[nbt={SelectedItem:{id:"minecraft:stick",Count:1b,tag:{display:{Name:'{"text":"StoneConvert"}'}}}}]

"[Comparator]-"

/execute at @p run fill ~-6 ~-6 ~-6 ~6 ~6 ~6 minecraft:stone replace dirt
================================================

Credit to u/SluggedPepper98 for the Bedrock code and tutorials.
Credit to my Nan because she's awesome

Please like and subscribe if you enjoyed :D