Underdog
During your turn, negate the effects of all face-up monsters your opponent controls. During your opponent's turn, negate the effects of all face-up monsters you control.
local s, id, o = GetID()
function s.initial_effect(c)
	--Activate
	local e1 = Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--disable
	local e2 = Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_DISABLE)
	e2:SetRange(LOCATION_SZONE)
	e2:SetTargetRange(LOCATION_MZONE, LOCATION_MZONE)
	e2:SetTarget(s.disable)
	c:RegisterEffect(e2)
end
function s.disable(e, c)
	return (c:IsType(TYPE_EFFECT) or bit.band(c:GetOriginalType(), TYPE_EFFECT) == TYPE_EFFECT) and c:IsControler(1 - Duel.GetTurnPlayer())
end


Underdog
During your turn, negate the effects of all face-up monsters your opponent controls. During your opponent's turn, negate the effects of all face-up monsters you control.
-- Underdog
local s, id, o = GetID()
function s.initial_effect(c)
	--Activate
	local e1 = Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--disable
	local e2 = Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_DISABLE)
	e2:SetRange(LOCATION_SZONE)
	e2:SetTargetRange(LOCATION_MZONE, LOCATION_MZONE)
	e2:SetTarget(s.disable)
	c:RegisterEffect(e2)
end
function s.disable(e, c)
	return (c:IsType(TYPE_EFFECT) or bit.band(c:GetOriginalType(), TYPE_EFFECT) == TYPE_EFFECT) and c:IsControler(1 - Duel.GetTurnPlayer())
end

