PQR SCRIPTS 3.3.5a

[dev]

if IsSpellInRange("Disarm","target") == 1 and UnitBuffID("target",46924) then                  RunMacroText("/cast defensive stance")
RunMacroText("/cast disarm")
end

Basic bladestrom - disarm script

InteruptSpell = 57994-- This is the spell ID of the interupt you want to use
InteruptDelay = 0.2--This is the time before the end of the cast
InteruptTarget = "target" --This is the target you want to interupt must be in Quotation Marks (Example : "UnitName")
if mana>=0 then	local spellName, _, _, _, startCast, endCast, _, _, canInterrupt = UnitCastingInfo(InteruptTarget) 		if UnitCastingInfo(InteruptTarget) ~= nil
		and ((endCast/1000) - GetTime()) > InteruptDelay  then
				_castSpell(InteruptSpell,InteruptTarget)
return true
		end		
end

Windshear - target casting script
I will upload more soon !
GL