--魔法族の結界
function c17896384.initial_effect(c)
	c:EnableCounterPermit(0x3001)
	c:SetCounterLimit(0x3001,4)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--add counter
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e2:SetRange(LOCATION_SZONE)
	e2:SetCode(EVENT_DESTROYED)
	e2:SetCondition(c17896384.ctcon)
	e2:SetOperation(c17896384.ctop)
	c:RegisterEffect(e2)
	--draw
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(17896384,0))
	e3:SetCategory(CATEGORY_DRAW)
	e3:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e3:SetType(EFFECT_TYPE_IGNITION)
	e3:SetRange(LOCATION_SZONE)
	e3:SetCost(c17896384.drcost)
	e3:SetTarget(c17896384.drtg)
	e3:SetOperation(c17896384.drop)
	c:RegisterEffect(e3)
end
function c17896384.ctfilter(c)
	return c:IsPreviousLocation(LOCATION_MZONE) and c:IsPreviousPosition(POS_FACEUP) and bit.band(c:GetPreviousRaceOnField(),RACE_SPELLCASTER)~=0
end
function c17896384.ctcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(c17896384.ctfilter,1,nil)
end
function c17896384.ctop(e,tp,eg,ep,ev,re,r,rp)
	e:GetHandler():AddCounter(0x3001,1)
end
function c17896384.cfilter(c)
	return c:IsFaceup() and c:IsRace(RACE_SPELLCASTER) and c:IsAbleToGraveAsCost()
end
function c17896384.drcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():IsAbleToGraveAsCost()
		and Duel.IsExistingMatchingCard(c17896384.cfilter,tp,LOCATION_MZONE,0,1,nil) end
	e:SetLabel(e:GetHandler():GetCounter(0x3001))
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectMatchingCard(tp,c17896384.cfilter,tp,LOCATION_MZONE,0,1,1,nil)
	g:AddCard(e:GetHandler())
	Duel.SendtoGrave(g,REASON_COST)
end
function c17896384.drtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():GetCounter(0x3001)>0 end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(e:GetLabel())
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,e:GetLabel())
end
function c17896384.drop(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	Duel.Draw(p,d,REASON_EFFECT)
end
