Extraordinary Journey

The doubled X in the cost is where the design shows its hand: the first copy scales how many creatures you exile, the second scales what that costs you, so blowing up a full board is a genuine mana investment rather than a bounce spell's freeroll. And bounce is what this is, at bottom. Exiling opposing creatures that their owners may play again is functionally a delayed, parked version of returning them to hand: the removal is temporary by design, nothing is destroyed, most everything can be recast eventually. What makes the card more than a slow Cyclonic Rift is the half that keeps paying you. The once-per-turn draw triggers whenever one or more nontoken creatures enter and at least one of them entered from exile or was cast from exile, and that clause quietly rewrites what the card is for. It is not a tempo tool that stalls out after resolution; it is a value hub that wants a steady drip of exile-and-return, the sort of loop flicker effects and reanimation-from-exile were already generating in pieces. Your own creatures blinked out and back feed it just as well as the opponent's recast board does, which means casting it small turns it into a patient card-advantage engine, while casting it large swings the board and then rewards you as everyone rebuilds. The enchantment does not lock anyone out; it converts the natural churn of creatures leaving and re-entering play into a card every turn, and asks you to build a deck that keeps that churn going.