As a Convoke instant at six mana, it draws a card for each permanent you control of the chosen type, and in a creature-heavy tribal deck it can refill a hand in a single end step
Eventually we assemble a combo like Vadrik, Astral Archmage + any R generator like Storm-Kiln Artist + Searing Touch for infinite damage, or Electrodominance copied with Reiterate (w/ buyback) for infinite damage
Even the name is a riddle of sorts, with palin meaning (in etymological terms) backwards, and chron implying time
Primeval Titan is the main win condition for Amulet Titan by representing a large attacker and a tutor for various lands, including the combo finisher of Valakut, the Molten Pinnacle in combination with Dryad of the Ilysian Grove
Plus, Twinflame Tyrant works with sources of non-combat damage quite well
Getting to start the game with a virtual eighth card is amazing, and for any deck that can get lots of value out of Yorions enters-the-battlefield ability, it is an unbelievable utility to have