Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
This card cannot be Special Summoned. To Tribute Summon this card, you must Tribute 3 Dragon-Type monsters. If this card attacks your opponent directly and reduces their Life Points to 0, you win the Match.
--ヴィクトリー・ドラゴン
--Victory Dragon
local s,id=GetID()
function s.initial_effect(c)
	--cannot special summon
	local e1=Effect.CreateEffect(c)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_SPSUMMON_CONDITION)
	c:RegisterEffect(e1)
	--summon with 3 tribute
	local e1=aux.AddNormalSummonProcedure(c,true,false,3,3)
	local e2=aux.AddNormalSetProcedure(c)
	--tribute limit
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_SINGLE)
	e3:SetCode(EFFECT_TRIBUTE_LIMIT)
	e3:SetValue(s.tlimit)
	c:RegisterEffect(e3)
	--match kill
	local e4=Effect.CreateEffect(c)
	e4:SetType(EFFECT_TYPE_SINGLE)
	e4:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e4:SetCode(EFFECT_MATCH_KILL)
	c:RegisterEffect(e4)
end
function s.tlimit(e,c)
	return not c:IsRace(RACE_DRAGON)
end