local cm,m=GetID()
cm.name="水之形"
function cm.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_GRAVE_SPSUMMON)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCost(cm.cost)
	e1:SetTarget(cm.target)
	e1:SetOperation(cm.activate)
	c:RegisterEffect(e1)
end
--Activate
function cm.costfilter(c)
	return c:IsType(TYPE_SPELL+TYPE_TRAP) and c:IsAbleToGraveAsCost()
end
function cm.filter(c,e,tp)
	return c:IsRace(RACE_FISH+RACE_SEASERPENT+RACE_AQUA+RACE_THUNDER)
		and RD.IsCanBeSpecialSummoned(c,e,tp,POS_FACEUP)
end
cm.cost=RD.CostSendHandToGrave(cm.costfilter,1,1)
function cm.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetMZoneCount(tp)>0
		and Duel.IsExistingMatchingCard(cm.filter,tp,LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_GRAVE)
end
function cm.activate(e,tp,eg,ep,ev,re,r,rp)
	if RD.SelectAndSpecialSummon(aux.NecroValleyFilter(cm.filter),tp,LOCATION_GRAVE,0,1,1,nil,e,POS_FACEUP) then
		local tc=Duel.GetOperatedGroup():GetFirst()
		RD.AttachAtkDef(e,tc,-800,0,RESET_EVENT+RESETS_STANDARD+RESET_PHASE+PHASE_END)
	end
end