How to repeat a script upon detecting that a model has been destroyed

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#1

I’m trying to create an ore mining system. and I’d like to find a way to repeat the ore randomization so that an ore gets replaced after another ore gets destroyed. I’ve tried messing around with DescendantRemoving, but I wasn’t able to get much working. Any help would be most appreciated!

#2 
-- Pretending that Model is the model and OreScript is the script

Model.Destroying:Connect(function()
    OreScript.Enabled = false
    task.wait()
    OreScript.Enabled = true
#3

You can use CollectionService | Documentation - Roblox Creator Hub for that.

Example in a ServerScript:

local CollectionService = game:GetService("CollectionService") -- Make sure ores have a tag

local OreTag = "Ore" -- Or whatever tag name you used for ores

local function AddOreConnections(Ore)
  Ore.Destroying:Once(function() -- Might have to change :Once to connect
    local OreCFrame = Ore:GetPivot() -- Assuming model has a primary part
    local RandomOre = ReplicatedStorage.Ores[math.random(1, #ReplicatedStorage.Ores:GetChildren())]:Clone() -- Get a new ore
    
    RandomOre:PivotTo(OreCFrame) -- Can be placed anywhere, again assuming it has a primary part
    RandomOre.Parent = Workspace -- Or where ever ores go
  end
end

for _, Ore in CollectionService:GetTagged(OreTag) do -- Initalize ores that are already spawned in
  AddOreConnections(Ore)
end

CollectionService.GetInstanceAddedSignal(OreTag):Connect(function(Ore)
  AddOreConnections(Ore)
end)