--パワー・ブレイカー
function c6903857.initial_effect(c)
	--destroy
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(6903857,0))
	e1:SetCategory(CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_TO_GRAVE)
	e1:SetCondition(c6903857.condition)
	e1:SetTarget(c6903857.target)
	e1:SetOperation(c6903857.operation)
	c:RegisterEffect(e1)
	--to defense
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(6903857,1))
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e2:SetCode(EVENT_DAMAGE_STEP_END)
	e2:SetCondition(c6903857.poscon)
	e2:SetOperation(c6903857.posop)
	c:RegisterEffect(e2)
end
function c6903857.condition(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return c:GetPreviousControler()==tp and c:IsReason(REASON_DESTROY) and rp~=tp
		and (not c:IsReason(REASON_BATTLE) or c==Duel.GetAttackTarget())
end
function c6903857.dfilter(c)
	return c:IsFaceup() and c:IsDestructable() and c:IsType(TYPE_SPELL+TYPE_TRAP)
end
function c6903857.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsOnField() and chkc:IsControler(1-tp) and c6903857.dfilter(chkc) end
	if chk==0 then return true end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectTarget(tp,c6903857.dfilter,tp,0,LOCATION_ONFIELD,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,g:GetCount(),0,0)
end
function c6903857.operation(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) then
		Duel.Destroy(tc,REASON_EFFECT)
	end
end
function c6903857.poscon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler()==Duel.GetAttacker() and e:GetHandler():IsRelateToBattle()
end
function c6903857.posop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsAttackPos() and c:IsRelateToBattle() then
		Duel.ChangePosition(c,POS_FACEUP_DEFENSE)
	end
end
