name: Evilswarm
card_text: 2 Level 4 DARK monsters
  When your opponent Special Summons a monster(s) (except during the Damage Step): You can detach 1 material from this card; change that Special Summoned monster(s) to face-down Defense Position.
lua: local s, id, o = GetID()
  function s.initial_effect(c)
  	--xyz summon
  	aux.AddXyzProcedure(c, aux.FilterBoolFunction(Card.IsAttribute, ATTRIBUTE_DARK), 4, 2)
  	c:EnableReviveLimit()
  	--pos
  	local e1 = Effect.CreateEffect(c)
  	e1:SetDescription(aux.Stringid(id, 0))
  	e1:SetCategory(CATEGORY_POSITION)
  	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
  	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
  	e1:SetRange(LOCATION_MZONE)
  	e1:SetCost(s.cost)
  	e1:SetTarget(s.target)
  	e1:SetOperation(s.operation)
  	c:RegisterEffect(e1)
  end
  function s.filter(c, e, tp)
  	return c:IsFaceup() and c:IsCanTurnSet() and c:IsSummonPlayer(1 - tp) and (not e or c:IsRelateToEffect(e))
  end
  function s.cost(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return e:GetHandler():CheckRemoveOverlayCard(tp, 1, REASON_COST)
  	end
  	e:GetHandler():RemoveOverlayCard(tp, 1, 1, REASON_COST)
  end
  function s.target(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return eg:IsExists(s.filter, 1, nil, nil, tp)
  	end
  	Duel.SetTargetCard(eg)
  	Duel.SetOperationInfo(0, CATEGORY_POSITION, eg, eg:GetCount(), 0, 0)
  end
  function s.operation(e, tp, eg, ep, ev, re, r, rp)
  	local g = eg:Filter(s.filter, nil, e, tp)
  	Duel.ChangePosition(g, POS_FACEDOWN_DEFENSE)
  end
  
  
source_text: Evilswarm
  2 Level 4 DARK monsters
  When your opponent Special Summons a monster(s) (except during the Damage Step): You can detach 1 material from this card; change that Special Summoned monster(s) to face-down Defense Position.
target_text: -- Evilswarm
  local s, id, o = GetID()
  function s.initial_effect(c)
  	--xyz summon
  	aux.AddXyzProcedure(c, aux.FilterBoolFunction(Card.IsAttribute, ATTRIBUTE_DARK), 4, 2)
  	c:EnableReviveLimit()
  	--pos
  	local e1 = Effect.CreateEffect(c)
  	e1:SetDescription(aux.Stringid(id, 0))
  	e1:SetCategory(CATEGORY_POSITION)
  	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
  	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
  	e1:SetRange(LOCATION_MZONE)
  	e1:SetCost(s.cost)
  	e1:SetTarget(s.target)
  	e1:SetOperation(s.operation)
  	c:RegisterEffect(e1)
  end
  function s.filter(c, e, tp)
  	return c:IsFaceup() and c:IsCanTurnSet() and c:IsSummonPlayer(1 - tp) and (not e or c:IsRelateToEffect(e))
  end
  function s.cost(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return e:GetHandler():CheckRemoveOverlayCard(tp, 1, REASON_COST)
  	end
  	e:GetHandler():RemoveOverlayCard(tp, 1, 1, REASON_COST)
  end
  function s.target(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return eg:IsExists(s.filter, 1, nil, nil, tp)
  	end
  	Duel.SetTargetCard(eg)
  	Duel.SetOperationInfo(0, CATEGORY_POSITION, eg, eg:GetCount(), 0, 0)
  end
  function s.operation(e, tp, eg, ep, ev, re, r, rp)
  	local g = eg:Filter(s.filter, nil, e, tp)
  	Duel.ChangePosition(g, POS_FACEDOWN_DEFENSE)
  end
  
  