Puralis,
1 Tuner + 1 non-Tuner monster
When this card is sent from the field to the Graveyard: All monsters your opponent currently controls lose 500 ATK.
local s, id, o = GetID()
function s.initial_effect(c)
	--synchro summon
	aux.AddSynchroProcedure(c, nil, aux.NonTuner(nil), 1, 1)
	c:EnableReviveLimit()
	--synchro summon success
	local e1 = Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id, 0))
	e1:SetCategory(CATEGORY_ATKCHANGE)
	e1:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_F)
	e1:SetCode(EVENT_TO_GRAVE)
	e1:SetCondition(s.atkcon)
	e1:SetOperation(s.atkop)
	c:RegisterEffect(e1)
end
function s.atkcon(e, tp, eg, ep, ev, re, r, rp)
	return e:GetHandler():IsPreviousLocation(LOCATION_ONFIELD)
end
function s.atkop(e, tp, eg, ep, ev, re, r, rp)
	local g = Duel.GetMatchingGroup(Card.IsFaceup, tp, 0, LOCATION_MZONE, nil)
	local tc = g:GetFirst()
	while tc do
		local e1 = Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetValue(-500)
		e1:SetReset(RESET_EVENT + RESETS_STANDARD)
		tc:RegisterEffect(e1)
		tc = g:GetNext()
	end
end


Puralis,
1 Tuner + 1 non-Tuner monster
When this card is sent from the field to the Graveyard: All monsters your opponent currently controls lose 500 ATK.
-- Puralis,
local s, id, o = GetID()
function s.initial_effect(c)
	--synchro summon
	aux.AddSynchroProcedure(c, nil, aux.NonTuner(nil), 1, 1)
	c:EnableReviveLimit()
	--synchro summon success
	local e1 = Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id, 0))
	e1:SetCategory(CATEGORY_ATKCHANGE)
	e1:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_F)
	e1:SetCode(EVENT_TO_GRAVE)
	e1:SetCondition(s.atkcon)
	e1:SetOperation(s.atkop)
	c:RegisterEffect(e1)
end
function s.atkcon(e, tp, eg, ep, ev, re, r, rp)
	return e:GetHandler():IsPreviousLocation(LOCATION_ONFIELD)
end
function s.atkop(e, tp, eg, ep, ev, re, r, rp)
	local g = Duel.GetMatchingGroup(Card.IsFaceup, tp, 0, LOCATION_MZONE, nil)
	local tc = g:GetFirst()
	while tc do
		local e1 = Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetValue(-500)
		e1:SetReset(RESET_EVENT + RESETS_STANDARD)
		tc:RegisterEffect(e1)
		tc = g:GetNext()
	end
end

