I got bored of Minecraft so this is what I'm doing for a solution. The command in theory is supposed to slow me down whenever I touch air.
The command I am trying is the following:
/execute if block ~ ~2 ~ Minecraft:air as @a run effect give @a Minecraft:slowness 999999 20 true
Edit: Does it matter if it is conditional or unconditional. Same question for command block type.
You have several errors at once.
1)You run a block check from the artist and not from all players.
2)Many commands are case sensitive.
3)You are testing 2 blocks at the top.
That will be correct:
/execute as @a at @s if block ~ ~-0.51 ~ minecraft:air run effect give @s minecraft:slowness 999999 20 true
Note: In order for the check to work not from the executor of the command, but from the players over which the check takes place, we add "at @s" after "as @a".
