Ebon
During your Standby Phase, inflict 300 damage to your opponent for each monster they control.
local s, id, o = GetID()
function s.initial_effect(c)
	--damage
	local e1 = Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id, 0))
	e1:SetCategory(CATEGORY_DAMAGE)
	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_F)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetCode(EVENT_PHASE + PHASE_STANDBY)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.condition(e, tp, eg, ep, ev, re, r, rp)
	return tp == Duel.GetTurnPlayer()
end
function s.target(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return true
	end
	local ct = Duel.GetFieldGroupCount(tp, 0, LOCATION_MZONE)
	Duel.SetTargetPlayer(1 - tp)
	Duel.SetOperationInfo(0, CATEGORY_DAMAGE, nil, 0, 1 - tp, ct * 300)
end
function s.operation(e, tp, eg, ep, ev, re, r, rp)
	local p = Duel.GetChainInfo(0, CHAININFO_TARGET_PLAYER)
	local ct = Duel.GetFieldGroupCount(tp, 0, LOCATION_MZONE)
	Duel.Damage(p, ct * 300, REASON_EFFECT)
end


Ebon
During your Standby Phase, inflict 300 damage to your opponent for each monster they control.
-- Ebon
local s, id, o = GetID()
function s.initial_effect(c)
	--damage
	local e1 = Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id, 0))
	e1:SetCategory(CATEGORY_DAMAGE)
	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_F)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetCode(EVENT_PHASE + PHASE_STANDBY)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.condition(e, tp, eg, ep, ev, re, r, rp)
	return tp == Duel.GetTurnPlayer()
end
function s.target(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return true
	end
	local ct = Duel.GetFieldGroupCount(tp, 0, LOCATION_MZONE)
	Duel.SetTargetPlayer(1 - tp)
	Duel.SetOperationInfo(0, CATEGORY_DAMAGE, nil, 0, 1 - tp, ct * 300)
end
function s.operation(e, tp, eg, ep, ev, re, r, rp)
	local p = Duel.GetChainInfo(0, CHAININFO_TARGET_PLAYER)
	local ct = Duel.GetFieldGroupCount(tp, 0, LOCATION_MZONE)
	Duel.Damage(p, ct * 300, REASON_EFFECT)
end

