--古生代化石マシン スカルコンボイ
function c57157964.initial_effect(c)
	aux.AddCodeList(c,59419719)
	--fusion summon
	c:EnableReviveLimit()
	aux.AddFusionProcFun2(c,c57157964.matfilter,aux.FilterBoolFunction(Card.IsLevelAbove,7),true)
	--spsummon condition
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e1:SetCode(EFFECT_SPSUMMON_CONDITION)
	e1:SetValue(c57157964.splimit)
	c:RegisterEffect(e1)
	--extra attack
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCode(EFFECT_EXTRA_ATTACK_MONSTER)
	e2:SetValue(2)
	c:RegisterEffect(e2)
	--damage
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(57157964,0))
	e3:SetCategory(CATEGORY_DAMAGE)
	e3:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e3:SetCode(EVENT_BATTLE_DESTROYING)
	e3:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e3:SetCondition(aux.bdocon)
	e3:SetTarget(c57157964.damtg)
	e3:SetOperation(c57157964.damop)
	c:RegisterEffect(e3)
	--atkdown
	local e4=Effect.CreateEffect(c)
	e4:SetType(EFFECT_TYPE_FIELD)
	e4:SetCode(EFFECT_UPDATE_ATTACK)
	e4:SetRange(LOCATION_MZONE)
	e4:SetTargetRange(0,LOCATION_MZONE)
	e4:SetCondition(c57157964.atkcon)
	e4:SetValue(c57157964.atkval)
	c:RegisterEffect(e4)
end
function c57157964.matfilter(c,fc)
	return c:IsRace(RACE_ROCK) and c:IsLocation(LOCATION_GRAVE) and c:IsControler(fc:GetControler())
end
function c57157964.splimit(e,se,sp,st)
	return se:GetHandler():IsCode(59419719,114514618,114514619) or not e:GetHandler():IsLocation(LOCATION_EXTRA)
end
function c57157964.damtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetTargetPlayer(1-tp)
	Duel.SetTargetParam(1000)
	Duel.SetOperationInfo(0,CATEGORY_DAMAGE,nil,0,1-tp,1000)
end
function c57157964.damop(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	Duel.Damage(p,d,REASON_EFFECT)
end
function c57157964.atkcon(e)
	return e:GetHandler():IsSummonType(SUMMON_TYPE_FUSION)
end
function c57157964.atkval(e,c)
	local val=math.max(c:GetBaseDefense(),0)
	return val*-1
end
