While some split cards let you cast one or both sides in the same turn, there are split cards with an aftermath mechanic where you cast one side, wait for the card to hit the graveyard, then cast the aftermath portion
Of course, you can just use basics or play with dual lands that come in tapped, but in a world where the best builds are shared online, anyone making that choice knows full well that their deck is fundamentally worse than their opponents'
It's part of a cycle of rare enchantment creatures from the Duskmourn MTG set which all return to the battlefield as non-creature enchantments after they're killed, making it a nightmare to remove
The grails are there when you are ready, but the entry tier is where the best value lives
Then you can discard two cards at the beginning of your first main phase to return this to your hand from your graveyard, which is card disadvantage naturally but with madness, lands, discard triggers like Archfiend of Ifnir, and loads more, it's got value
Dont forget to include infinite hand size resources like Wizard Class and Reliquary Tower so you can keep everything you draw and not have to discard down to hand size at the end of your turns