--水精鱗の深影隊
--Mermail Shadow Squad
--scripted by Naim
local s,id=GetID()
function s.initial_effect(c)
	--Make the Levels of all WATER monsters you currently control become 7 until the end of that turn
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_LVCHANGE)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1,id)
	e1:SetCost(s.lvcost)
	e1:SetTarget(s.lvtg)
	e1:SetOperation(s.lvop)
	c:RegisterEffect(e1)
	--Special Summon 1 Level 4 or lower "Atlantean" or "Mermail" monster from your Deck
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetCountLimit(1,{id,1})
	e2:SetCondition(s.spcon)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
end
s.listed_series={SET_ATLANTEAN,SET_MERMAIL}
s.listed_names={id}
function s.lvcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(aux.AND(Card.IsDiscardable,Card.IsAbleToGraveAsCost),tp,LOCATION_HAND,0,1,nil) end
	Duel.DiscardHand(tp,aux.AND(Card.IsDiscardable,Card.IsAbleToGraveAsCost),1,1,REASON_COST|REASON_DISCARD)
end
function s.lvfilter(c)
	return c:HasLevel() and not c:IsLevel(7) and c:IsAttribute(ATTRIBUTE_WATER) and c:IsFaceup()
end
function s.lvtg(e,tp,eg,ep,ev,re,r,rp,chk)
	local g=Duel.GetMatchingGroup(s.lvfilter,tp,LOCATION_MZONE,0,nil)
	if chk==0 then return #g>0 end
	Duel.SetOperationInfo(0,CATEGORY_LVCHANGE,g,#g,tp,7)
end
function s.lvop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(s.lvfilter,tp,LOCATION_MZONE,0,nil)
	if #g==0 then return end
	local c=e:GetHandler()
	for tc in g:Iter() do
		--Their Levels become 7 until the end of this turn
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetCode(EFFECT_CHANGE_LEVEL)
		e1:SetValue(7)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e1)
	end
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsReason(REASON_COST) and re and re:IsActivated() and re:IsMonsterEffect()
		and Duel.GetChainInfo(0,CHAININFO_TRIGGERING_ATTRIBUTE)&ATTRIBUTE_WATER>0
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_DECK)
end
function s.spfilter(c,e,tp)
	return c:IsLevelBelow(4) and c:IsSetCard(s.listed_series) and not c:IsCode(id)
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)>0 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
		local g=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_DECK,0,1,1,nil,e,tp)
		if #g>0 then
			Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
		end
	end
	local c=e:GetHandler()
	--Cannot Special Summon from the Extra Deck for the rest of this turn, except WATER monsters
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,2))
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET+EFFECT_FLAG_CLIENT_HINT)
	e1:SetCode(EFFECT_CANNOT_SPECIAL_SUMMON)
	e1:SetTargetRange(1,0)
	e1:SetTarget(function(e,c) return c:IsLocation(LOCATION_EXTRA) and not c:IsAttribute(ATTRIBUTE_WATER) end)
	e1:SetReset(RESET_PHASE|PHASE_END)
	Duel.RegisterEffect(e1,tp)
	--Clock Lizard check
	aux.addTempLizardCheck(c,tp,function(e,c) return not c:IsOriginalAttribute(ATTRIBUTE_WATER) end)
end