Tethys,
When you draw a Fairy monster(s) (except during the Damage Step): You can reveal 1 of those monsters; draw 1 card. This card must be face-up on the field to activate and to resolve this effect.
local s, id, o = GetID()
function s.initial_effect(c)
	--draw
	local e1 = Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id, 0))
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetRange(LOCATION_MZONE)
	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_DRAW)
	e1:SetCost(s.drcost)
	e1:SetTarget(s.drtg)
	e1:SetOperation(s.drop)
	c:RegisterEffect(e1)
end
function s.filter(c)
	return c:IsRace(RACE_FAIRY) and not c:IsPublic()
end
function s.drcost(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return ep == tp and eg:IsExists(s.filter, 1, nil)
	end
	local g = eg:Filter(s.filter, nil)
	if g:GetCount() == 1 then
		Duel.ConfirmCards(1 - tp, g)
		Duel.ShuffleHand(tp)
	else
		Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_CONFIRM)
		local sg = g:Select(tp, 1, 1, nil)
		Duel.ConfirmCards(1 - tp, sg)
		Duel.ShuffleHand(tp)
	end
end
function s.drtg(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return Duel.IsPlayerCanDraw(tp, 1)
	end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(1)
	Duel.SetOperationInfo(0, CATEGORY_DRAW, nil, 0, tp, 1)
end
function s.drop(e, tp, eg, ep, ev, re, r, rp)
	if e:GetHandler():IsFacedown() or not e:GetHandler():IsRelateToEffect(e) then
		return
	end
	local p, d = Duel.GetChainInfo(0, CHAININFO_TARGET_PLAYER, CHAININFO_TARGET_PARAM)
	Duel.Draw(p, d, REASON_EFFECT)
end


Tethys,
When you draw a Fairy monster(s) (except during the Damage Step): You can reveal 1 of those monsters; draw 1 card. This card must be face-up on the field to activate and to resolve this effect.
-- Tethys,
local s, id, o = GetID()
function s.initial_effect(c)
	--draw
	local e1 = Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id, 0))
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetRange(LOCATION_MZONE)
	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_DRAW)
	e1:SetCost(s.drcost)
	e1:SetTarget(s.drtg)
	e1:SetOperation(s.drop)
	c:RegisterEffect(e1)
end
function s.filter(c)
	return c:IsRace(RACE_FAIRY) and not c:IsPublic()
end
function s.drcost(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return ep == tp and eg:IsExists(s.filter, 1, nil)
	end
	local g = eg:Filter(s.filter, nil)
	if g:GetCount() == 1 then
		Duel.ConfirmCards(1 - tp, g)
		Duel.ShuffleHand(tp)
	else
		Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_CONFIRM)
		local sg = g:Select(tp, 1, 1, nil)
		Duel.ConfirmCards(1 - tp, sg)
		Duel.ShuffleHand(tp)
	end
end
function s.drtg(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return Duel.IsPlayerCanDraw(tp, 1)
	end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(1)
	Duel.SetOperationInfo(0, CATEGORY_DRAW, nil, 0, tp, 1)
end
function s.drop(e, tp, eg, ep, ev, re, r, rp)
	if e:GetHandler():IsFacedown() or not e:GetHandler():IsRelateToEffect(e) then
		return
	end
	local p, d = Duel.GetChainInfo(0, CHAININFO_TARGET_PLAYER, CHAININFO_TARGET_PARAM)
	Duel.Draw(p, d, REASON_EFFECT)
end

