name: Silvera,
card_text: 1 Tuner + 1+ non-Tuner monsters
  If this card is Special Summoned: You can change all face-up monsters your opponent controls to face-down Defense Position. Illusion and Spellcaster Synchro Monsters you control gain 500 ATK, also if they attack a Defense Position monster, inflict double piercing battle damage to your opponent.
lua: local s, id, o = GetID()
  function s.initial_effect(c)
  	aux.AddSynchroProcedure(c, nil, aux.NonTuner(nil), 1)
  	c:EnableReviveLimit()
  	--
  	local e1 = Effect.CreateEffect(c)
  	e1:SetDescription(aux.Stringid(id, 0))
  	e1:SetCategory(CATEGORY_POSITION)
  	e1:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_O)
  	e1:SetProperty(EFFECT_FLAG_DELAY)
  	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
  	e1:SetTarget(s.postg)
  	e1:SetOperation(s.posop)
  	c:RegisterEffect(e1)
  	--
  	local e2 = Effect.CreateEffect(c)
  	e2:SetType(EFFECT_TYPE_FIELD)
  	e2:SetCode(EFFECT_UPDATE_ATTACK)
  	e2:SetRange(LOCATION_MZONE)
  	e2:SetTargetRange(LOCATION_MZONE, 0)
  	e2:SetTarget(s.atktg)
  	e2:SetValue(500)
  	c:RegisterEffect(e2)
  	--
  	local e3 = Effect.CreateEffect(c)
  	e3:SetType(EFFECT_TYPE_FIELD)
  	e3:SetCode(EFFECT_PIERCE)
  	e3:SetRange(LOCATION_MZONE)
  	e3:SetTargetRange(LOCATION_MZONE, 0)
  	e3:SetTarget(s.atktg)
  	e3:SetValue(DOUBLE_DAMAGE)
  	c:RegisterEffect(e3)
  end
  function s.posfilter(c)
  	return c:IsPosition(POS_FACEUP) and c:IsCanTurnSet()
  end
  function s.postg(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return Duel.IsExistingMatchingCard(s.posfilter, tp, 0, LOCATION_MZONE, 1, nil)
  	end
  	local g = Duel.GetMatchingGroup(s.posfilter, tp, 0, LOCATION_MZONE, nil)
  	Duel.SetOperationInfo(0, CATEGORY_POSITION, g, g:GetCount(), 0, 0)
  end
  function s.posop(e, tp, eg, ep, ev, re, r, rp)
  	local g = Duel.GetMatchingGroup(s.posfilter, tp, 0, LOCATION_MZONE, nil)
  	if g:GetCount() > 0 then
  		Duel.ChangePosition(g, POS_FACEDOWN_DEFENSE)
  	end
  end
  function s.atktg(e, c)
  	return c:IsType(TYPE_SYNCHRO) and c:IsRace(RACE_ILLUSION + RACE_SPELLCASTER)
  end
  
  
source_text: Silvera,
  1 Tuner + 1+ non-Tuner monsters
  If this card is Special Summoned: You can change all face-up monsters your opponent controls to face-down Defense Position. Illusion and Spellcaster Synchro Monsters you control gain 500 ATK, also if they attack a Defense Position monster, inflict double piercing battle damage to your opponent.
target_text: -- Silvera,
  local s, id, o = GetID()
  function s.initial_effect(c)
  	aux.AddSynchroProcedure(c, nil, aux.NonTuner(nil), 1)
  	c:EnableReviveLimit()
  	--
  	local e1 = Effect.CreateEffect(c)
  	e1:SetDescription(aux.Stringid(id, 0))
  	e1:SetCategory(CATEGORY_POSITION)
  	e1:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_O)
  	e1:SetProperty(EFFECT_FLAG_DELAY)
  	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
  	e1:SetTarget(s.postg)
  	e1:SetOperation(s.posop)
  	c:RegisterEffect(e1)
  	--
  	local e2 = Effect.CreateEffect(c)
  	e2:SetType(EFFECT_TYPE_FIELD)
  	e2:SetCode(EFFECT_UPDATE_ATTACK)
  	e2:SetRange(LOCATION_MZONE)
  	e2:SetTargetRange(LOCATION_MZONE, 0)
  	e2:SetTarget(s.atktg)
  	e2:SetValue(500)
  	c:RegisterEffect(e2)
  	--
  	local e3 = Effect.CreateEffect(c)
  	e3:SetType(EFFECT_TYPE_FIELD)
  	e3:SetCode(EFFECT_PIERCE)
  	e3:SetRange(LOCATION_MZONE)
  	e3:SetTargetRange(LOCATION_MZONE, 0)
  	e3:SetTarget(s.atktg)
  	e3:SetValue(DOUBLE_DAMAGE)
  	c:RegisterEffect(e3)
  end
  function s.posfilter(c)
  	return c:IsPosition(POS_FACEUP) and c:IsCanTurnSet()
  end
  function s.postg(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return Duel.IsExistingMatchingCard(s.posfilter, tp, 0, LOCATION_MZONE, 1, nil)
  	end
  	local g = Duel.GetMatchingGroup(s.posfilter, tp, 0, LOCATION_MZONE, nil)
  	Duel.SetOperationInfo(0, CATEGORY_POSITION, g, g:GetCount(), 0, 0)
  end
  function s.posop(e, tp, eg, ep, ev, re, r, rp)
  	local g = Duel.GetMatchingGroup(s.posfilter, tp, 0, LOCATION_MZONE, nil)
  	if g:GetCount() > 0 then
  		Duel.ChangePosition(g, POS_FACEDOWN_DEFENSE)
  	end
  end
  function s.atktg(e, c)
  	return c:IsType(TYPE_SYNCHRO) and c:IsRace(RACE_ILLUSION + RACE_SPELLCASTER)
  end
  
  