As many know, in the 14th century, Tamerlane conquered much of Persia and, both to gain a historical claim as successor to the Persian Empire and to distance himself from the influence of the Caliphate, converted to Zoroastrianism. Against all odds, Tamerlane was able to convert many of his followers to Zoroastrianism as well, leading to the religion's revival. Even now, Zoroastrianism has many followers from Anatolia to India thanks to Tamerlane's initial conversion. After looking into the history of the Timurid dynasty and the rough political landscape in the Middle East (also thanks to Tamerlane...), I began to think; what would have happened if Tamerlane remained a Muslim instead of becoming a Zoroastrian?
(OOC: This is probably border-line ASB, but I figured it could still happen, it would just be very unlikely.)