Charge
Target 1 Level 4 or lower Fiend monster in your GY; Special Summon it, then discard 1 Fiend monster. You can only activate 1 "Charge Into a Dark World" per turn.
local s, id, o = GetID()
function s.initial_effect(c)
	--Activate
	local e1 = Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON + CATEGORY_HANDES)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1, id + EFFECT_COUNT_CODE_OATH)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.filter(c, e, tp)
	return c:IsLevelBelow(4) and c:IsRace(RACE_FIEND) and c:IsCanBeSpecialSummoned(e, 0, tp, false, false)
end
function s.target(e, tp, eg, ep, ev, re, r, rp, chk, chkc)
	if chkc then
		return chkc:IsControler(tp) and chkc:IsLocation(LOCATION_GRAVE) and s.filter(chkc, e, tp)
	end
	if chk == 0 then
		return Duel.GetLocationCount(tp, LOCATION_MZONE) > 0
			and Duel.IsExistingTarget(s.filter, tp, LOCATION_GRAVE, 0, 1, nil, e, tp)
			and Duel.IsExistingMatchingCard(Card.IsRace, tp, LOCATION_HAND, 0, 1, nil, RACE_FIEND)
	end
	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_SPSUMMON)
	local g = Duel.SelectTarget(tp, s.filter, tp, LOCATION_GRAVE, 0, 1, 1, nil, e, tp)
	Duel.SetOperationInfo(0, CATEGORY_SPECIAL_SUMMON, g, 1, 0, 0)
	Duel.SetOperationInfo(0, CATEGORY_HANDES, nil, 1, tp, 1)
end
function s.activate(e, tp, eg, ep, ev, re, r, rp)
	local tc = Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and Duel.SpecialSummon(tc, 0, tp, tp, false, false, POS_FACEUP) > 0 then
		Duel.BreakEffect()
		Duel.DiscardHand(tp, Card.IsRace, 1, 1, REASON_EFFECT + REASON_DISCARD, nil, RACE_FIEND)
	end
end


Charge
Target 1 Level 4 or lower Fiend monster in your GY; Special Summon it, then discard 1 Fiend monster. You can only activate 1 "Charge Into a Dark World" per turn.
-- Charge
local s, id, o = GetID()
function s.initial_effect(c)
	--Activate
	local e1 = Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON + CATEGORY_HANDES)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1, id + EFFECT_COUNT_CODE_OATH)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.filter(c, e, tp)
	return c:IsLevelBelow(4) and c:IsRace(RACE_FIEND) and c:IsCanBeSpecialSummoned(e, 0, tp, false, false)
end
function s.target(e, tp, eg, ep, ev, re, r, rp, chk, chkc)
	if chkc then
		return chkc:IsControler(tp) and chkc:IsLocation(LOCATION_GRAVE) and s.filter(chkc, e, tp)
	end
	if chk == 0 then
		return Duel.GetLocationCount(tp, LOCATION_MZONE) > 0
			and Duel.IsExistingTarget(s.filter, tp, LOCATION_GRAVE, 0, 1, nil, e, tp)
			and Duel.IsExistingMatchingCard(Card.IsRace, tp, LOCATION_HAND, 0, 1, nil, RACE_FIEND)
	end
	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_SPSUMMON)
	local g = Duel.SelectTarget(tp, s.filter, tp, LOCATION_GRAVE, 0, 1, 1, nil, e, tp)
	Duel.SetOperationInfo(0, CATEGORY_SPECIAL_SUMMON, g, 1, 0, 0)
	Duel.SetOperationInfo(0, CATEGORY_HANDES, nil, 1, tp, 1)
end
function s.activate(e, tp, eg, ep, ev, re, r, rp)
	local tc = Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and Duel.SpecialSummon(tc, 0, tp, tp, false, false, POS_FACEUP) > 0 then
		Duel.BreakEffect()
		Duel.DiscardHand(tp, Card.IsRace, 1, 1, REASON_EFFECT + REASON_DISCARD, nil, RACE_FIEND)
	end
end

