--CLIENT
Spells = Workspace:WaitForChild("RunSpellEffect");

Spells.OnClientEvent:connect(function(cframe,spellname)
    -- render local effect based on settings, etc
    -- play sound effects in client, etc
end)

function CollisionAt(cframe,spelltype)
   Spells:FireServer(cfrmae,spelltype);
end

CollisionAt(CFrame.new(5,5,5),"Fireballidk")

-- Now it'd send that message to the server, and it'd call fireallclients, firing the function from above to render the
-- desired effects.