--３Ｋボルト
--Triple Threat Thunder
local s,id=GetID()
function s.initial_effect(c)
	--Change the original ATK of 1 face-up Level 8 or lower monster on your opponent's field to 0 until the end of this turn
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_ATKCHANGE)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.filter(c)
	return c:IsFaceup() and c:GetBaseAttack()>0 and c:IsLevelBelow(8) and c:IsNotMaximumModeSide()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(aux.FaceupFilter(Card.IsRace,RACE_AQUA),tp,LOCATION_MZONE,0,3,nil)
		and Duel.IsExistingMatchingCard(s.filter,tp,0,LOCATION_MZONE,1,nil) end
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	--Effect
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATKDEF)
	local g=Duel.SelectMatchingCard(tp,s.filter,tp,0,LOCATION_MZONE,1,1,nil)
	if #g>0 then
		Duel.HintSelection(g)
		--Original ATK becomes 0
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_SET_BASE_ATTACK)
		e1:SetValue(0)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		g:GetFirst():RegisterEffect(e1)
	end
end