Custom Enchant: Layer

[MrCowMan]

Category: Prison

Suggested name: Doesn't matter

Spigot/Skript Version: Version: 2.3.7

What I want:
I am making a prison server and have coded 12 of the 13 custom enchants, and the last one is layer which I have no idea how to do it. What layer should do is break an entire layer, but not break the bedrock, glowstone, quartz or into the other mines.

Ideas for commands: It wouldn't be a command it would be on a block break or mine

Ideas for permissions: No permissions, please

When I'd like it by: ASAP

 

[Terry Jackson]

i got u fam

on mine:
    if player's tool is a pickaxe:
        if {jh.level} is not set:
            set {jh.level} to 1
        set {_alllores::*} to lore of player's tool split at "||"
        set {_line} to 0
        loop {_alllores::*}:
            add 1 to {_line}
            if "%loop-value%" contains "Jackhammer":
                set {_jh.line} to line {_line} of lore of player's tool
                set {_jh.line.set} to uncolored {_jh.line}
                replace all " " in {_jh.line.set} with ""
                replace all "Jackhammer" in {_jh.line.set} with ""
                set {jh.level} to {_jh.line.set} parsed as an number
                set {_chance} to 0.00035*{jh.level}
                chance of {_chance}%:
                    set {_y} to y coordinate of event-block
                    loop blocks in radius 100 around event-block:
                        if "%region at loop-block%" contains "mine":
                            if y coordinate of loop-block = {_y}:
                                if {_n} is 750:
                                    set {_n} to 0
                                    wait 15 ticks
                                set {_n} to {_n} + 1
                                give player 1 of loop-block
                                set loop-block to air
                                add 1 to {experince.%{item}%.amount}
                                add 1 to {mined.%{item}%.amount}
                                set {_loc} to location of loop-block
                                drawDot count 1, particle "explosion", XYZ 0, 0, 0, center {_loc}, visibleRange 55, keepFor 0 ticks