--マジック·ジャマー
function c77414722.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_NEGATE+CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_CHAINING)
	e1:SetCondition(c77414722.condition)
	e1:SetCost(c77414722.cost)
	e1:SetTarget(c77414722.target)
	e1:SetOperation(c77414722.activate)
	c:RegisterEffect(e1)
end
function c77414722.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.GetChainInfo(ev,CHAININFO_TYPE)==TYPE_SPELL and re:IsHasType(EFFECT_TYPE_ACTIVATE) and Duel.IsChainInactivatable(ev)
end
function c77414722.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsDiscardable,tp,LOCATION_HAND,0,1,e:GetHandler()) end
	Duel.DiscardHand(tp,Card.IsDiscardable,1,1,REASON_COST+REASON_DISCARD)
end
function c77414722.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_NEGATE,eg,1,0,0)
	if eg:GetFirst():IsDestructable() then
		eg:GetFirst():CreateEffectRelation(e)
		Duel.SetOperationInfo(0,CATEGORY_DESTROY,eg,1,0,0)
	end
end
function c77414722.activate(e,tp,eg,ep,ev,re,r,rp)
	Duel.NegateActivation(ev)
	local ec=eg:GetFirst()
	if ec:IsRelateToEffect(e) then
		Duel.Destroy(eg,REASON_EFFECT)
	end
end
