Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except with "Trial of the Princesses". During your Standby Phase, gain 800 Life Points for each monster you control.
--魔法の国の王女－ピケル
--Princess Pikeru
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--cannot special summon
	local e1=Effect.CreateEffect(c)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_SPSUMMON_CONDITION)
	c:RegisterEffect(e1)
	--recover
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_RECOVER)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e2:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e2:SetCode(EVENT_PHASE|PHASE_STANDBY)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1)
	e2:SetCondition(s.condition)
	e2:SetTarget(s.target)
	e2:SetOperation(s.operation)
	c:RegisterEffect(e2)
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,LOCATION_MZONE,0)
	Duel.SetTargetPlayer(tp)
	Duel.SetOperationInfo(0,CATEGORY_RECOVER,nil,0,tp,ct*800)
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,LOCATION_MZONE,0)
	Duel.Recover(p,ct*800,REASON_EFFECT)
end