Eradicator
Tribute 1 DARK monster with 2500 or more ATK, and declare 1 type of card (Spell or Trap); look at your opponent's hand, all Spells/Traps they control, and all cards they draw until the end of their 3rd turn after this card resolves, and destroy all cards of that declared type.
local s, id, o = GetID()
function s.initial_effect(c)
	--Activate
	local e1 = Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(0, TIMING_TOHAND + TIMING_END_PHASE)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.costfilter(c)
	return c:IsAttribute(ATTRIBUTE_DARK) and c:GetAttack() >= 2500
end
function s.cost(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return Duel.CheckReleaseGroup(tp, s.costfilter, 1, nil)
	end
	local g = Duel.SelectReleaseGroup(tp, s.costfilter, 1, 1, nil)
	Duel.Release(g, REASON_COST)
end
function s.tgfilter(c, ty)
	return c:IsFaceup() and c:IsType(ty)
end
function s.target(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return true
	end
	Duel.Hint(HINT_SELECTMSG, tp, aux.Stringid(id, 2))
	local ac = Duel.SelectOption(tp, aux.Stringid(id, 0), aux.Stringid(id, 1))
	local ty = TYPE_SPELL
	if ac == 1 then
		ty = TYPE_TRAP
	end
	e:SetLabel(ty)
	local g = Duel.GetMatchingGroup(s.tgfilter, tp, 0, LOCATION_ONFIELD, nil, ty)
	Duel.SetOperationInfo(0, CATEGORY_DESTROY, g, g:GetCount(), 0, 0)
end
function s.cffilter(c)
	return c:IsLocation(LOCATION_HAND) or (c:IsFacedown() and c:IsType(TYPE_SPELL + TYPE_TRAP))
end
function s.activate(e, tp, eg, ep, ev, re, r, rp)
	local ty = e:GetLabel()
	local g = Duel.GetFieldGroup(tp, 0, LOCATION_ONFIELD + LOCATION_HAND)
	if g:GetCount() > 0 then
		local cg = g:Filter(s.cffilter, nil)
		Duel.ConfirmCards(tp, cg)
		local dg = g:Filter(Card.IsType, nil, ty)
		Duel.Destroy(dg, REASON_EFFECT)
		Duel.ShuffleHand(1 - tp)
	end
	local e1 = Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_CONTINUOUS)
	e1:SetProperty(EFFECT_FLAG_DELAY)
	e1:SetCode(EVENT_DRAW)
	e1:SetOperation(s.desop)
	e1:SetLabel(ty)
	e1:SetReset(RESET_PHASE + PHASE_END + RESET_OPPO_TURN, 3)
	Duel.RegisterEffect(e1, tp)
	local e2 = Effect.CreateEffect(e:GetHandler())
	e2:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_CONTINUOUS)
	e2:SetCode(EVENT_PHASE + PHASE_END)
	e2:SetCountLimit(1)
	e2:SetCondition(s.turncon)
	e2:SetOperation(s.turnop)
	e2:SetReset(RESET_PHASE + PHASE_END + RESET_OPPO_TURN, 3)
	Duel.RegisterEffect(e2, tp)
	e2:SetLabelObject(e1)
	e:GetHandler():RegisterFlagEffect(1082946, RESET_PHASE + PHASE_END + RESET_OPPO_TURN, 0, 3)
	s[e:GetHandler()] = e2
end
function s.desop(e, tp, eg, ep, ev, re, r, rp)
	if ep == e:GetOwnerPlayer() then
		return
	end
	local hg = eg:Filter(Card.IsLocation, nil, LOCATION_HAND)
	if hg:GetCount() == 0 then
		return
	end
	Duel.ConfirmCards(1 - ep, hg)
	local dg = hg:Filter(Card.IsType, nil, e:GetLabel())
	Duel.Destroy(dg, REASON_EFFECT)
	Duel.ShuffleHand(ep)
end
function s.turncon(e, tp, eg, ep, ev, re, r, rp)
	return Duel.GetTurnPlayer() ~= tp
end
function s.turnop(e, tp, eg, ep, ev, re, r, rp)
	local ct = e:GetLabel()
	ct = ct + 1
	e:SetLabel(ct)
	e:GetHandler():SetTurnCounter(ct)
	if ct == 3 then
		e:GetLabelObject():Reset()
		e:GetOwner():ResetFlagEffect(1082946)
	end
end


Eradicator
Tribute 1 DARK monster with 2500 or more ATK, and declare 1 type of card (Spell or Trap); look at your opponent's hand, all Spells/Traps they control, and all cards they draw until the end of their 3rd turn after this card resolves, and destroy all cards of that declared type.
-- Eradicator
local s, id, o = GetID()
function s.initial_effect(c)
	--Activate
	local e1 = Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(0, TIMING_TOHAND + TIMING_END_PHASE)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.costfilter(c)
	return c:IsAttribute(ATTRIBUTE_DARK) and c:GetAttack() >= 2500
end
function s.cost(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return Duel.CheckReleaseGroup(tp, s.costfilter, 1, nil)
	end
	local g = Duel.SelectReleaseGroup(tp, s.costfilter, 1, 1, nil)
	Duel.Release(g, REASON_COST)
end
function s.tgfilter(c, ty)
	return c:IsFaceup() and c:IsType(ty)
end
function s.target(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return true
	end
	Duel.Hint(HINT_SELECTMSG, tp, aux.Stringid(id, 2))
	local ac = Duel.SelectOption(tp, aux.Stringid(id, 0), aux.Stringid(id, 1))
	local ty = TYPE_SPELL
	if ac == 1 then
		ty = TYPE_TRAP
	end
	e:SetLabel(ty)
	local g = Duel.GetMatchingGroup(s.tgfilter, tp, 0, LOCATION_ONFIELD, nil, ty)
	Duel.SetOperationInfo(0, CATEGORY_DESTROY, g, g:GetCount(), 0, 0)
end
function s.cffilter(c)
	return c:IsLocation(LOCATION_HAND) or (c:IsFacedown() and c:IsType(TYPE_SPELL + TYPE_TRAP))
end
function s.activate(e, tp, eg, ep, ev, re, r, rp)
	local ty = e:GetLabel()
	local g = Duel.GetFieldGroup(tp, 0, LOCATION_ONFIELD + LOCATION_HAND)
	if g:GetCount() > 0 then
		local cg = g:Filter(s.cffilter, nil)
		Duel.ConfirmCards(tp, cg)
		local dg = g:Filter(Card.IsType, nil, ty)
		Duel.Destroy(dg, REASON_EFFECT)
		Duel.ShuffleHand(1 - tp)
	end
	local e1 = Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_CONTINUOUS)
	e1:SetProperty(EFFECT_FLAG_DELAY)
	e1:SetCode(EVENT_DRAW)
	e1:SetOperation(s.desop)
	e1:SetLabel(ty)
	e1:SetReset(RESET_PHASE + PHASE_END + RESET_OPPO_TURN, 3)
	Duel.RegisterEffect(e1, tp)
	local e2 = Effect.CreateEffect(e:GetHandler())
	e2:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_CONTINUOUS)
	e2:SetCode(EVENT_PHASE + PHASE_END)
	e2:SetCountLimit(1)
	e2:SetCondition(s.turncon)
	e2:SetOperation(s.turnop)
	e2:SetReset(RESET_PHASE + PHASE_END + RESET_OPPO_TURN, 3)
	Duel.RegisterEffect(e2, tp)
	e2:SetLabelObject(e1)
	e:GetHandler():RegisterFlagEffect(1082946, RESET_PHASE + PHASE_END + RESET_OPPO_TURN, 0, 3)
	s[e:GetHandler()] = e2
end
function s.desop(e, tp, eg, ep, ev, re, r, rp)
	if ep == e:GetOwnerPlayer() then
		return
	end
	local hg = eg:Filter(Card.IsLocation, nil, LOCATION_HAND)
	if hg:GetCount() == 0 then
		return
	end
	Duel.ConfirmCards(1 - ep, hg)
	local dg = hg:Filter(Card.IsType, nil, e:GetLabel())
	Duel.Destroy(dg, REASON_EFFECT)
	Duel.ShuffleHand(ep)
end
function s.turncon(e, tp, eg, ep, ev, re, r, rp)
	return Duel.GetTurnPlayer() ~= tp
end
function s.turnop(e, tp, eg, ep, ev, re, r, rp)
	local ct = e:GetLabel()
	ct = ct + 1
	e:SetLabel(ct)
	e:GetHandler():SetTurnCounter(ct)
	if ct == 3 then
		e:GetLabelObject():Reset()
		e:GetOwner():ResetFlagEffect(1082946)
	end
end

