Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Your opponent can discard 1 card to negate this card's effect, otherwise both players discard 2 cards, then draw 2 cards.
--暗黒の謀略
--Dark Scheme
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DRAW)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then
		local h1=Duel.GetFieldGroupCount(tp,LOCATION_HAND,0)
		if e:GetHandler():IsLocation(LOCATION_HAND) then h1=h1-1 end
		local h2=Duel.GetFieldGroupCount(tp,0,LOCATION_HAND)
		local d1=Duel.GetFieldGroupCount(tp,LOCATION_DECK,0)
		local d2=Duel.GetFieldGroupCount(tp,0,LOCATION_DECK)
		return h1>1 and h2>1 and d1>1 and d2>1
	end
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,PLAYER_ALL,2)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetFieldGroupCount(tp,LOCATION_HAND,0)<2 or Duel.GetFieldGroupCount(tp,0,LOCATION_HAND)<2 then return end
	if Duel.SelectYesNo(1-tp,aux.Stringid(id,0)) then
		Duel.DiscardHand(1-tp,aux.TRUE,1,1,REASON_EFFECT|REASON_DISCARD,nil)
		if Duel.IsChainDisablable(0) then
			Duel.NegateEffect(0)
			return
		end
	end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DISCARD)
	local g1=Duel.SelectMatchingCard(tp,aux.TRUE,tp,LOCATION_HAND,0,2,2,nil)
	Duel.Hint(HINT_SELECTMSG,1-tp,HINTMSG_DISCARD)
	local g2=Duel.SelectMatchingCard(1-tp,aux.TRUE,1-tp,LOCATION_HAND,0,2,2,nil)
	g1:Merge(g2)
	Duel.SendtoGrave(g1,REASON_EFFECT|REASON_DISCARD)
	Duel.BreakEffect()
	Duel.Draw(tp,2,REASON_EFFECT)
	Duel.Draw(1-tp,2,REASON_EFFECT)
end