Chthonian
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it be treated as an Effect Monster with this effect:
● This card can attack twice during the same Battle Phase.
local s, id, o = GetID()
function s.initial_effect(c)
	aux.EnableDualAttribute(c)
	--double atk
	local e1 = Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_EXTRA_ATTACK)
	e1:SetValue(1)
	e1:SetCondition(aux.IsDualState)
	c:RegisterEffect(e1)
end


Chthonian
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it be treated as an Effect Monster with this effect:
● This card can attack twice during the same Battle Phase.
-- Chthonian
local s, id, o = GetID()
function s.initial_effect(c)
	aux.EnableDualAttribute(c)
	--double atk
	local e1 = Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_EXTRA_ATTACK)
	e1:SetValue(1)
	e1:SetCondition(aux.IsDualState)
	c:RegisterEffect(e1)
end

