--ジョインテック・プライムレックス
--Jointech Prime Rex
--Scripted by YoshiDuels
local s,id=GetID()
function s.initial_effect(c)
	--summon/set with 1 tribute
	local e1=aux.AddNormalSummonProcedure(c,true,true,1,1,SUMMON_TYPE_TRIBUTE,aux.Stringid(id,0),nil,s.otop)
	--Reduce Level
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.otop(g,e,tp,eg,ep,ev,re,r,rp,c,minc,zone,relzone,exeff)
	--change base attack
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e1:SetRange(LOCATION_MZONE)
	e1:SetReset(RESET_EVENT|RESETS_STANDARD_DISABLE&~RESET_TOFIELD)
	e1:SetCode(EFFECT_SET_BASE_ATTACK)
	e1:SetValue(1800)
	c:RegisterEffect(e1)
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_GRAVE,0,3,nil) end
end
function s.cfilter(c)
	return c:IsFaceup() and c:IsLevelAbove(4) and not c:IsMaximumModeSide()
end
function s.filter(c)
	return c:IsAttribute(ATTRIBUTE_LIGHT) and c:IsAbleToDeckOrExtraAsCost()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.cfilter,tp,0,LOCATION_MZONE,1,nil) end
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	--Requirement
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
	local g=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_GRAVE,0,3,3,nil)
	if #g==0 then return end
	Duel.HintSelection(g)
	if Duel.SendtoDeck(g,nil,SEQ_DECKSHUFFLE,REASON_COST)==0 then return end
	--Effect
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	local g=Duel.SelectMatchingCard(tp,s.cfilter,tp,0,LOCATION_MZONE,1,1,nil)
	if #g>0 then
		Duel.HintSelection(g)
		--decrease level by 3
		g:GetFirst():UpdateLevel(-3,RESETS_STANDARD_PHASE_END,c)
		if Duel.IsExistingMatchingCard(aux.TRUE,tp,0,LOCATION_STZONE,1,nil)
			and Duel.SelectYesNo(tp,aux.Stringid(id,2)) then
			Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
			local g=Duel.SelectMatchingCard(tp,aux.TRUE,tp,0,LOCATION_STZONE,1,1,nil)
			Duel.HintSelection(g)
			Duel.BreakEffect()
			Duel.Destroy(g,REASON_EFFECT)
		end
	end
end