Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Discard 1 card; Fusion Summon 1 Fusion Monster from your Extra Deck, using monsters from either field as Fusion Material. Neither player can activate cards or effects in response to this card's activation.
--超融合
--Super Polymerization
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Fusion.CreateSummonEff{handler=c,matfilter=Fusion.OnFieldMat,extrafil=s.fextra,extratg=s.extratg}
	e1:SetHintTiming(0,TIMINGS_CHECK_MONSTER_E)
	e1:SetCost(s.cost)
	c:RegisterEffect(e1)
end
function s.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 s.fextra(e,tp,mg)
	return Duel.GetMatchingGroup(Fusion.IsMonsterFilter(Card.IsFaceup),tp,0,LOCATION_ONFIELD,nil)
end
function s.extratg(e,tp,eg,ep,ev,re,r,rp,chk)
	if e:IsHasType(EFFECT_TYPE_ACTIVATE) then
		Duel.SetChainLimit(aux.FALSE)
	end
end