--Ebb Tide
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(0,TIMING_DRAW_PHASE)
	e1:SetTarget(s.tg)
	c:RegisterEffect(e1)
	--pos
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_POSITION)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e2:SetCode(EVENT_MSET)
	e2:SetRange(LOCATION_SZONE)
	e2:SetTarget(s.target)
	e2:SetOperation(s.operation)
	c:RegisterEffect(e2)
end
function s.tg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	local res,teg,tep,tev,tre,tr,trp=Duel.CheckEvent(EVENT_MSET,true)
	if res and s.target(e,tp,teg,tep,tev,tre,tr,trp,0) then
		e:SetOperation(s.operation)
		s.target(e,tp,teg,tep,tev,tre,tr,trp,1)
		e:SetCategory(CATEGORY_POSITION)
	else
		e:SetOperation(nil)
		e:SetCategory(0)
	end
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():IsRelateToEffect(e) end
	Duel.SetTargetCard(eg)
	Duel.SetOperationInfo(0,CATEGORY_POSITION,eg,#eg,0,0)
end
function s.filter(c,e)
	return c:IsRelateToEffect(e)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	if not e:GetHandler():IsRelateToEffect(e) then return end
	local g=eg:Filter(s.filter,nil,e)
	Duel.ChangePosition(g,0x4,0x4,0x4,0x4,true)
end