At approx 33:15 on this video, Rabbi Mizrachi mentions Nibiru, and goes on to speak about Aliyah to Israel before Moshiach. The full shiur is a ''Unique Explanation Of Parshat Mishpatim: The Secrets Of The Verses Based On The Zohar – Kabbalah.''
A note to commenters: On the subject of Aliyah, please do not post your ''opinion'' as this is not helpful and just confuses the issue. Rabbi Mizrachi is quoting Torah sources. If you can provide other Torah sources that differ from his, please post them, otherwise try to refrain from telling us your personal opinion.